Revert 106142 - Add a new globals object for PPAPI tracking information.

This adds a specialization on the host and plugin side of the proxy. This
replaces the ad-hoc singleton tracking done by the resource and var trackers
with just being getters on this global object.

Most code can use the single PpapiGlobals class. I also allow code to get the
host and plugin specializations since some code needs access to some specific
features of each side.

In a later pass I'll move the other stuff out of TrackerBase and delete it.

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/8316008

TBR=brettw@chromium.org
Review URL: http://codereview.chromium.org/8342016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@106148 0039d316-1c4b-4281-b951-d872f2087c98

65 files changed, 329 insertions, 556 deletions

diff --git a/chrome/renderer/chrome_ppb_pdf_impl.cc b/chrome/renderer/chrome_ppb_pdf_impl.cc
index 3a39f25..e9b5174 100644
--- a/chrome/renderer/chrome_ppb_pdf_impl.cc
+++ b/chrome/renderer/chrome_ppb_pdf_impl.cc
@@ -29,15 +29,12 @@
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "unicode/usearch.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/ppb_image_data_impl.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
 
-using ppapi::PpapiGlobals;
-using webkit::ppapi::HostGlobals;
 using WebKit::WebView;
 using content::RenderThread;
 
@@ -126,7 +123,7 @@ static const ResourceImageInfo kResourceImageMap[] = {
 PP_Var GetLocalizedString(PP_Instance instance_id,
                           PP_ResourceString string_id) {
   webkit::ppapi::PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id);
+      webkit::ppapi::ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return PP_MakeUndefined();
 
@@ -162,7 +159,7 @@ PP_Resource GetResourceImage(PP_Instance instance_id,
       ResourceBundle::GetSharedInstance().GetBitmapNamed(res_id);
 
   // Validate the instance.
-  if (!HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id))
+  if (!webkit::ppapi::ResourceTracker::Get()->GetInstance(instance_id))
     return 0;
   scoped_refptr<webkit::ppapi::PPB_ImageData_Impl> image_data(
       new webkit::ppapi::PPB_ImageData_Impl(instance_id));
@@ -190,7 +187,7 @@ PP_Resource GetFontFileWithFallback(
     PP_PrivateFontCharset charset) {
 #if defined(OS_LINUX)
   // Validate the instance before using it below.
-  if (!HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id))
+  if (!webkit::ppapi::ResourceTracker::Get()->GetInstance(instance_id))
     return 0;
 
   scoped_refptr<ppapi::StringVar> face_name(ppapi::StringVar::FromPPVar(
@@ -222,7 +219,7 @@ bool GetFontTableForPrivateFontFile(PP_Resource font_file,
                                     uint32_t* output_length) {
 #if defined(OS_LINUX)
   ppapi::Resource* resource =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(font_file);
+      ppapi::TrackerBase::Get()->GetResourceTracker()->GetResource(font_file);
   if (!resource)
     return false;
 
@@ -285,7 +282,7 @@ void SearchString(PP_Instance instance,
 
 void DidStartLoading(PP_Instance instance_id) {
   webkit::ppapi::PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id);
+      webkit::ppapi::ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return;
   instance->delegate()->DidStartLoading();
@@ -293,7 +290,7 @@ void DidStartLoading(PP_Instance instance_id) {
 
 void DidStopLoading(PP_Instance instance_id) {
   webkit::ppapi::PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id);
+      webkit::ppapi::ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return;
   instance->delegate()->DidStopLoading();
@@ -301,7 +298,7 @@ void DidStopLoading(PP_Instance instance_id) {
 
 void SetContentRestriction(PP_Instance instance_id, int restrictions) {
   webkit::ppapi::PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id);
+      webkit::ppapi::ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return;
   instance->delegate()->SetContentRestriction(restrictions);
@@ -320,7 +317,7 @@ void UserMetricsRecordAction(PP_Var action) {
 
 void HasUnsupportedFeature(PP_Instance instance_id) {
   webkit::ppapi::PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id);
+      webkit::ppapi::ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return;
 
@@ -336,7 +333,7 @@ void HasUnsupportedFeature(PP_Instance instance_id) {
 
 void SaveAs(PP_Instance instance_id) {
   webkit::ppapi::PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id);
+      webkit::ppapi::ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return;
   instance->delegate()->SaveURLAs(instance->plugin_url());
diff --git a/content/ppapi_plugin/ppapi_thread.h b/content/ppapi_plugin/ppapi_thread.h
index 430e168..cc58362 100644
--- a/content/ppapi_plugin/ppapi_thread.h
+++ b/content/ppapi_plugin/ppapi_thread.h
@@ -18,7 +18,6 @@
 #include "ppapi/c/pp_module.h"
 #include "ppapi/c/trusted/ppp_broker.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
-#include "ppapi/proxy/plugin_globals.h"
 
 class FilePath;
 class PpapiWebKitThread;
@@ -67,9 +66,6 @@ class PpapiThread : public ChildThread,
 
   base::ScopedNativeLibrary library_;
 
-  // Global state tracking for the proxy.
-  ppapi::proxy::PluginGlobals plugin_globals_;
-
   ppapi::proxy::Dispatcher::GetInterfaceFunc get_plugin_interface_;
 
   // Callback to call when a new instance connects to the broker.
diff --git a/ppapi/ppapi_proxy.gypi b/ppapi/ppapi_proxy.gypi
index 257d336..8630cf9 100644
--- a/ppapi/ppapi_proxy.gypi
+++ b/ppapi/ppapi_proxy.gypi
@@ -44,8 +44,6 @@
         'proxy/interface_proxy.h',
         'proxy/plugin_dispatcher.cc',
         'proxy/plugin_dispatcher.h',
-        'proxy/plugin_globals.cc',
-        'proxy/plugin_globals.h',
         'proxy/plugin_message_filter.cc',
         'proxy/plugin_message_filter.h',
         'proxy/plugin_resource_tracker.cc',
diff --git a/ppapi/ppapi_shared.gypi b/ppapi/ppapi_shared.gypi
index bae1949..06e3e67 100644
--- a/ppapi/ppapi_shared.gypi
+++ b/ppapi/ppapi_shared.gypi
@@ -56,8 +56,6 @@
         'shared_impl/memory_impl.cc',
         'shared_impl/opengles2_impl.cc',
         'shared_impl/opengles2_impl.h',
-        'shared_impl/ppapi_globals.cc',
-        'shared_impl/ppapi_globals.h',
         'shared_impl/ppapi_preferences.cc',
         'shared_impl/ppapi_preferences.h',
         'shared_impl/ppp_instance_combined.cc',
diff --git a/ppapi/ppapi_tests.gypi b/ppapi/ppapi_tests.gypi
index 72691c2..c7c51cf 100644
--- a/ppapi/ppapi_tests.gypi
+++ b/ppapi/ppapi_tests.gypi
@@ -220,8 +220,6 @@
         'proxy/ppp_messaging_proxy_unittest.cc',
         'proxy/serialized_var_unittest.cc',
         'shared_impl/resource_tracker_unittest.cc',
-        'shared_impl/test_globals.cc',
-        'shared_impl/test_globals.h',
       ],
     },
     {
diff --git a/ppapi/proxy/enter_proxy.h b/ppapi/proxy/enter_proxy.h
index 96ac0c18..d7bf7c2 100644
--- a/ppapi/proxy/enter_proxy.h
+++ b/ppapi/proxy/enter_proxy.h
@@ -9,7 +9,6 @@
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
-#include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/thunk/enter.h"
 
@@ -33,8 +32,8 @@ class EnterPluginFromHostResource
  public:
   EnterPluginFromHostResource(const HostResource& host_resource)
       : thunk::EnterResourceNoLock<ResourceT>(
-            PluginGlobals::Get()->plugin_resource_tracker()->
-                PluginResourceForHostResource(host_resource),
+            PluginResourceTracker::GetInstance()->PluginResourceForHostResource(
+                host_resource),
             false) {
     // Validate that we're in the plugin rather than the host. Otherwise this
     // object will do the wrong thing. In the plugin, the instance should have
diff --git a/ppapi/proxy/plugin_globals.cc b/ppapi/proxy/plugin_globals.cc
deleted file mode 100644
index 888c3bd..0000000
--- a/ppapi/proxy/plugin_globals.cc
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ppapi/proxy/plugin_globals.h"
-
-namespace ppapi {
-namespace proxy {
-
-PluginGlobals* PluginGlobals::plugin_globals_ = NULL;
-
-PluginGlobals::PluginGlobals() : ppapi::PpapiGlobals() {
-  DCHECK(!plugin_globals_);
-  plugin_globals_ = this;
-}
-
-PluginGlobals::~PluginGlobals() {
-  DCHECK(plugin_globals_ == this);
-  plugin_globals_ = NULL;
-}
-
-ResourceTracker* PluginGlobals::GetResourceTracker() {
-  return &plugin_resource_tracker_;
-}
-
-VarTracker* PluginGlobals::GetVarTracker() {
-  return &plugin_var_tracker_;
-}
-
-}  // namespace proxy
-}  // namespace ppapi
diff --git a/ppapi/proxy/plugin_globals.h b/ppapi/proxy/plugin_globals.h
deleted file mode 100644
index 141b904..0000000
--- a/ppapi/proxy/plugin_globals.h
+++ /dev/null
@@ -1,50 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef PPAPI_PROXY_PLUGIN_GLOBALS_H_
-#define PPAPI_PROXY_PLUGIN_GLOBALS_H_
-
-#include "base/compiler_specific.h"
-#include "ppapi/proxy/plugin_resource_tracker.h"
-#include "ppapi/proxy/plugin_var_tracker.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
-
-namespace ppapi {
-namespace proxy {
-
-class PluginGlobals : public PpapiGlobals {
- public:
-  PluginGlobals();
-  virtual ~PluginGlobals();
-
-  // Getter for the global singleton. Generally, you should use
-  // PpapiGlobals::Get() when possible. Use this only when you need some
-  // plugin-specific functionality.
-  inline static PluginGlobals* Get() { return plugin_globals_; }
-
-  // PpapiGlobals implementation.
-  virtual ResourceTracker* GetResourceTracker() OVERRIDE;
-  virtual VarTracker* GetVarTracker() OVERRIDE;
-
-  // Getters for the plugin-specific versions.
-  PluginResourceTracker* plugin_resource_tracker() {
-    return &plugin_resource_tracker_;
-  }
-  PluginVarTracker* plugin_var_tracker() {
-    return &plugin_var_tracker_;
-  }
-
- private:
-  static PluginGlobals* plugin_globals_;
-
-  PluginResourceTracker plugin_resource_tracker_;
-  PluginVarTracker plugin_var_tracker_;
-
-  DISALLOW_COPY_AND_ASSIGN(PluginGlobals);
-};
-
-}  // namespace proxy
-}  // namespace ppapi
-
-#endif   // PPAPI_PROXY_PLUGIN_GLOBALS_H_
diff --git a/ppapi/proxy/plugin_resource_tracker.cc b/ppapi/proxy/plugin_resource_tracker.cc
index 67e2d69..4abd8f7 100644
--- a/ppapi/proxy/plugin_resource_tracker.cc
+++ b/ppapi/proxy/plugin_resource_tracker.cc
@@ -7,7 +7,6 @@
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
-#include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/serialized_var.h"
 #include "ppapi/shared_impl/proxy_lock.h"
@@ -20,13 +19,17 @@ namespace proxy {
 
 namespace {
 
+// When non-NULL, this object overrides the ResourceTrackerSingleton.
+PluginResourceTracker* g_resource_tracker_override = NULL;
+
 TrackerBase* GetTrackerBase() {
-  return PluginGlobals::Get()->plugin_resource_tracker();
+  return PluginResourceTracker::GetInstance();
 }
 
 }  // namespace
 
-PluginResourceTracker::PluginResourceTracker() {
+PluginResourceTracker::PluginResourceTracker()
+    : var_tracker_test_override_(NULL) {
 #ifdef ENABLE_PEPPER_THREADING
   // Set the global proxy lock, since the plugin-side of the proxy needs to be
   // synchronized.
@@ -41,8 +44,20 @@ PluginResourceTracker::~PluginResourceTracker() {
 }
 
 // static
+void PluginResourceTracker::SetInstanceForTest(PluginResourceTracker* tracker) {
+  g_resource_tracker_override = tracker;
+}
+
+// static
+PluginResourceTracker* PluginResourceTracker::GetInstance() {
+  if (g_resource_tracker_override)
+    return g_resource_tracker_override;
+  return Singleton<PluginResourceTracker>::get();
+}
+
+// static
 TrackerBase* PluginResourceTracker::GetTrackerBaseInstance() {
-  return GetTrackerBase();
+  return GetInstance();
 }
 
 PP_Resource PluginResourceTracker::PluginResourceForHostResource(
@@ -61,6 +76,14 @@ FunctionGroupBase* PluginResourceTracker::GetFunctionAPI(PP_Instance inst,
   return NULL;
 }
 
+VarTracker* PluginResourceTracker::GetVarTracker() {
+  return &var_tracker();
+}
+
+ResourceTracker* PluginResourceTracker::GetResourceTracker() {
+  return this;
+}
+
 PP_Module PluginResourceTracker::GetModuleForInstance(PP_Instance instance) {
   // Currently proxied plugins don't use the PP_Module for anything useful.
   return 0;
diff --git a/ppapi/proxy/plugin_resource_tracker.h b/ppapi/proxy/plugin_resource_tracker.h
index cf87787..30fafb2 100644
--- a/ppapi/proxy/plugin_resource_tracker.h
+++ b/ppapi/proxy/plugin_resource_tracker.h
@@ -15,6 +15,7 @@
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
+#include "ppapi/proxy/plugin_var_tracker.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/shared_impl/host_resource.h"
 #include "ppapi/shared_impl/resource_tracker.h"
@@ -33,9 +34,13 @@ class PluginDispatcher;
 class PPAPI_PROXY_EXPORT PluginResourceTracker : public TrackerBase,
                                                  public ResourceTracker {
  public:
-  PluginResourceTracker();
-  virtual ~PluginResourceTracker();
+  // Called by tests that want to specify a specific ResourceTracker. This
+  // allows them to use a unique one each time and avoids singletons sticking
+  // around across tests.
+  static void SetInstanceForTest(PluginResourceTracker* tracker);
 
+  // Returns the global singleton resource tracker for the plugin.
+  static PluginResourceTracker* GetInstance();
   static TrackerBase* GetTrackerBaseInstance();
 
   // Given a host resource, maps it to an existing plugin resource ID if it
@@ -43,9 +48,20 @@ class PPAPI_PROXY_EXPORT PluginResourceTracker : public TrackerBase,
   PP_Resource PluginResourceForHostResource(
       const HostResource& resource) const;
 
+  PluginVarTracker& var_tracker() {
+    return var_tracker_test_override_ ? *var_tracker_test_override_
+                                      : var_tracker_;
+  }
+
+  void set_var_tracker_test_override(PluginVarTracker* t) {
+    var_tracker_test_override_ = t;
+  }
+
   // TrackerBase.
   virtual FunctionGroupBase* GetFunctionAPI(PP_Instance inst,
                                             InterfaceID id) OVERRIDE;
+  virtual VarTracker* GetVarTracker() OVERRIDE;
+  virtual ResourceTracker* GetResourceTracker() OVERRIDE;
   virtual PP_Module GetModuleForInstance(PP_Instance instance) OVERRIDE;
 
  protected:
@@ -54,6 +70,24 @@ class PPAPI_PROXY_EXPORT PluginResourceTracker : public TrackerBase,
   virtual void RemoveResource(Resource* object) OVERRIDE;
 
  private:
+  friend struct DefaultSingletonTraits<PluginResourceTracker>;
+  friend class PluginResourceTrackerTest;
+  friend class PluginProxyTestHarness;
+
+  PluginResourceTracker();
+  virtual ~PluginResourceTracker();
+
+  // Use the var_tracker_test_override_ instead if it's non-NULL.
+  //
+  // TODO(brettw) this should be somehow separated out from here. I'm thinking
+  // of some global object that manages PPAPI globals, including separate var
+  // and resource trackers.
+  PluginVarTracker var_tracker_;
+
+  // Non-owning pointer to a var tracker mock used by tests. NULL when no
+  // test implementation is provided.
+  PluginVarTracker* var_tracker_test_override_;
+
   // Map of host instance/resource pairs to a plugin resource ID.
   typedef std::map<HostResource, PP_Resource> HostResourceMap;
   HostResourceMap host_resource_map_;
diff --git a/ppapi/proxy/plugin_var_serialization_rules.cc b/ppapi/proxy/plugin_var_serialization_rules.cc
index 3d9975a..49e1fc3 100644
--- a/ppapi/proxy/plugin_var_serialization_rules.cc
+++ b/ppapi/proxy/plugin_var_serialization_rules.cc
@@ -6,17 +6,15 @@
 
 #include "base/logging.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
-#include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/plugin_var_tracker.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/var.h"
 
 namespace ppapi {
 namespace proxy {
 
 PluginVarSerializationRules::PluginVarSerializationRules()
-    : var_tracker_(PluginGlobals::Get()->plugin_var_tracker()) {
+    : var_tracker_(&PluginResourceTracker::GetInstance()->var_tracker()) {
 }
 
 PluginVarSerializationRules::~PluginVarSerializationRules() {
diff --git a/ppapi/proxy/ppapi_proxy_test.cc b/ppapi/proxy/ppapi_proxy_test.cc
index 484253b..1c7233c 100644
--- a/ppapi/proxy/ppapi_proxy_test.cc
+++ b/ppapi/proxy/ppapi_proxy_test.cc
@@ -151,7 +151,9 @@ Dispatcher* PluginProxyTestHarness::GetDispatcher() {
 
 void PluginProxyTestHarness::SetUpHarness() {
   // These must be first since the dispatcher set-up uses them.
-  resource_tracker().DidCreateInstance(pp_instance());
+  resource_tracker_.DidCreateInstance(pp_instance());
+  PluginResourceTracker::SetInstanceForTest(&resource_tracker_);
+  resource_tracker_.set_var_tracker_test_override(&var_tracker_);
 
   plugin_dispatcher_.reset(new PluginDispatcher(
       base::Process::Current().handle(),
@@ -166,7 +168,9 @@ void PluginProxyTestHarness::SetUpHarnessWithChannel(
     base::WaitableEvent* shutdown_event,
     bool is_client) {
   // These must be first since the dispatcher set-up uses them.
-  resource_tracker().DidCreateInstance(pp_instance());
+  resource_tracker_.DidCreateInstance(pp_instance());
+  PluginResourceTracker::SetInstanceForTest(&resource_tracker_);
+  resource_tracker_.set_var_tracker_test_override(&var_tracker_);
   plugin_delegate_mock_.Init(ipc_message_loop, shutdown_event);
 
   plugin_dispatcher_.reset(new PluginDispatcher(
@@ -182,7 +186,8 @@ void PluginProxyTestHarness::TearDownHarness() {
   plugin_dispatcher_->DidDestroyInstance(pp_instance());
   plugin_dispatcher_.reset();
 
-  resource_tracker().DidDeleteInstance(pp_instance());
+  resource_tracker_.DidDeleteInstance(pp_instance());
+  PluginResourceTracker::SetInstanceForTest(NULL);
 }
 
 base::MessageLoopProxy*
diff --git a/ppapi/proxy/ppapi_proxy_test.h b/ppapi/proxy/ppapi_proxy_test.h
index cf71a5e..03ec57d 100644
--- a/ppapi/proxy/ppapi_proxy_test.h
+++ b/ppapi/proxy/ppapi_proxy_test.h
@@ -13,7 +13,6 @@
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
-#include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/plugin_var_tracker.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -79,12 +78,8 @@ class PluginProxyTestHarness : public ProxyTestHarnessBase {
   virtual ~PluginProxyTestHarness();
 
   PluginDispatcher* plugin_dispatcher() { return plugin_dispatcher_.get(); }
-  PluginResourceTracker& resource_tracker() {
-    return *plugin_globals_.plugin_resource_tracker();
-  }
-  PluginVarTracker& var_tracker() {
-    return *plugin_globals_.plugin_var_tracker();
-  }
+  PluginResourceTracker& resource_tracker() { return resource_tracker_; }
+  PluginVarTracker& var_tracker() { return var_tracker_; }
 
   // ProxyTestHarnessBase implementation.
   virtual Dispatcher* GetDispatcher();
@@ -128,8 +123,8 @@ class PluginProxyTestHarness : public ProxyTestHarnessBase {
   };
 
  private:
-  PluginGlobals plugin_globals_;
-
+  PluginResourceTracker resource_tracker_;
+  PluginVarTracker var_tracker_;
   scoped_ptr<PluginDispatcher> plugin_dispatcher_;
   PluginDelegateMock plugin_delegate_mock_;
 };
diff --git a/ppapi/proxy/ppb_audio_proxy.cc b/ppapi/proxy/ppb_audio_proxy.cc
index f1aedf7..453d7b0 100644
--- a/ppapi/proxy/ppb_audio_proxy.cc
+++ b/ppapi/proxy/ppb_audio_proxy.cc
@@ -16,7 +16,6 @@
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/audio_impl.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/thunk/ppb_audio_config_api.h"
 #include "ppapi/thunk/enter.h"
@@ -65,11 +64,11 @@ Audio::Audio(const HostResource& audio_id,
     : Resource(audio_id),
       config_(config_id) {
   SetCallback(callback, user_data);
-  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(config_);
+  PluginResourceTracker::GetInstance()->AddRefResource(config_);
 }
 
 Audio::~Audio() {
-  PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(config_);
+  PluginResourceTracker::GetInstance()->ReleaseResource(config_);
 }
 
 PPB_Audio_API* Audio::AsPPB_Audio_API() {
@@ -78,7 +77,7 @@ PPB_Audio_API* Audio::AsPPB_Audio_API() {
 
 PP_Resource Audio::GetCurrentConfig() {
   // AddRef for the caller.
-  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(config_);
+  PluginResourceTracker::GetInstance()->AddRefResource(config_);
   return config_;
 }
 
diff --git a/ppapi/proxy/ppb_core_proxy.cc b/ppapi/proxy/ppb_core_proxy.cc
index c01eb45..9173df6 100644
--- a/ppapi/proxy/ppb_core_proxy.cc
+++ b/ppapi/proxy/ppb_core_proxy.cc
@@ -18,7 +18,6 @@
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/proxy_lock.h"
 #include "ppapi/shared_impl/time_conversion.h"
 
@@ -35,12 +34,12 @@ base::MessageLoopProxy* GetMainThreadMessageLoop() {
 
 void AddRefResource(PP_Resource resource) {
   ppapi::ProxyAutoLock lock;
-  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(resource);
+  PluginResourceTracker::GetInstance()->AddRefResource(resource);
 }
 
 void ReleaseResource(PP_Resource resource) {
   ppapi::ProxyAutoLock lock;
-  PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(resource);
+  PluginResourceTracker::GetInstance()->ReleaseResource(resource);
 }
 
 double GetTime() {
diff --git a/ppapi/proxy/ppb_cursor_control_proxy.cc b/ppapi/proxy/ppb_cursor_control_proxy.cc
index 960c010..a0b0ee8 100644
--- a/ppapi/proxy/ppb_cursor_control_proxy.cc
+++ b/ppapi/proxy/ppb_cursor_control_proxy.cc
@@ -9,7 +9,6 @@
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/thunk.h"
 
@@ -38,8 +37,8 @@ PP_Bool PPB_CursorControl_Proxy::SetCursor(PP_Instance instance,
   // It's legal for the image ID to be null if the type is not custom.
   HostResource cursor_image_resource;
   if (type == PP_CURSORTYPE_CUSTOM) {
-    Resource* cursor_image =
-        PpapiGlobals::Get()->GetResourceTracker()->GetResource(custom_image_id);
+    Resource* cursor_image = PluginResourceTracker::GetInstance()->
+        GetResource(custom_image_id);
     if (!cursor_image || cursor_image->pp_instance() != instance)
       return PP_FALSE;
     cursor_image_resource = cursor_image->host_resource();
diff --git a/ppapi/proxy/ppb_file_chooser_proxy.cc b/ppapi/proxy/ppb_file_chooser_proxy.cc
index 1e55af6..1c7907c 100644
--- a/ppapi/proxy/ppb_file_chooser_proxy.cc
+++ b/ppapi/proxy/ppb_file_chooser_proxy.cc
@@ -17,8 +17,6 @@
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/ppb_file_ref_proxy.h"
 #include "ppapi/proxy/serialized_var.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
-#include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/shared_impl/var.h"
 #include "ppapi/thunk/resource_creation_api.h"
 #include "ppapi/thunk/thunk.h"
@@ -89,7 +87,7 @@ FileChooser::~FileChooser() {
 
   // Any existing files we haven't transferred ownership to the plugin need
   // to be freed.
-  ResourceTracker* tracker = PpapiGlobals::Get()->GetResourceTracker();
+  PluginResourceTracker* tracker = PluginResourceTracker::GetInstance();
   while (!file_queue_.empty()) {
     tracker->ReleaseResource(file_queue_.front());
     file_queue_.pop();
diff --git a/ppapi/proxy/ppb_file_ref_proxy.cc b/ppapi/proxy/ppb_file_ref_proxy.cc
index c9824a4..49a1131 100644
--- a/ppapi/proxy/ppb_file_ref_proxy.cc
+++ b/ppapi/proxy/ppb_file_ref_proxy.cc
@@ -90,7 +90,7 @@ int32_t FileRef::Delete(PP_CompletionCallback callback) {
 int32_t FileRef::Rename(PP_Resource new_file_ref,
                         PP_CompletionCallback callback) {
   Resource* new_file_ref_object =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(new_file_ref);
+      PluginResourceTracker::GetInstance()->GetResource(new_file_ref);
   if (!new_file_ref_object ||
       new_file_ref_object->host_resource().instance() != pp_instance())
     return PP_ERROR_BADRESOURCE;
@@ -113,7 +113,7 @@ PPB_FileRef_Proxy::~PPB_FileRef_Proxy() {
 PP_Resource PPB_FileRef_Proxy::CreateProxyResource(PP_Resource file_system,
                                                    const char* path) {
   Resource* file_system_object =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(file_system);
+      PluginResourceTracker::GetInstance()->GetResource(file_system);
   if (!file_system_object)
     return 0;
 
diff --git a/ppapi/proxy/ppb_flash_file_proxy.cc b/ppapi/proxy/ppb_flash_file_proxy.cc
index de5a40c..fa636aa 100644
--- a/ppapi/proxy/ppb_flash_file_proxy.cc
+++ b/ppapi/proxy/ppb_flash_file_proxy.cc
@@ -21,10 +21,9 @@
 #include "ppapi/c/pp_file_info.h"
 #include "ppapi/c/private/ppb_flash_file.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/resource.h"
-#include "ppapi/shared_impl/resource_tracker.h"
 
 namespace ppapi {
 namespace proxy {
@@ -632,7 +631,7 @@ int32_t OpenFileRefFile(PP_Resource file_ref_id,
                         int32_t mode,
                         PP_FileHandle* file) {
   Resource* file_ref =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(file_ref_id);
+      PluginResourceTracker::GetInstance()->GetResource(file_ref_id);
   if (!file_ref)
     return PP_ERROR_BADRESOURCE;
 
@@ -652,7 +651,7 @@ int32_t OpenFileRefFile(PP_Resource file_ref_id,
 int32_t QueryFileRefFile(PP_Resource file_ref_id,
                          PP_FileInfo* info) {
   Resource* file_ref =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(file_ref_id);
+      PluginResourceTracker::GetInstance()->GetResource(file_ref_id);
   if (!file_ref)
     return PP_ERROR_BADRESOURCE;
 
diff --git a/ppapi/proxy/ppb_flash_proxy.cc b/ppapi/proxy/ppb_flash_proxy.cc
index b1d0d22..1faae86 100644
--- a/ppapi/proxy/ppb_flash_proxy.cc
+++ b/ppapi/proxy/ppb_flash_proxy.cc
@@ -14,12 +14,11 @@
 #include "ppapi/c/private/ppb_flash.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/proxy_module.h"
 #include "ppapi/proxy/serialized_var.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/resource.h"
-#include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/shared_impl/scoped_pp_resource.h"
 #include "ppapi/shared_impl/var.h"
 #include "ppapi/thunk/enter.h"
@@ -49,8 +48,8 @@ PP_Bool DrawGlyphs(PP_Instance instance,
                    uint32_t glyph_count,
                    const uint16_t glyph_indices[],
                    const PP_Point glyph_advances[]) {
-  Resource* image_data =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(pp_image_data);
+  Resource* image_data = PluginResourceTracker::GetInstance()->GetResource(
+      pp_image_data);
   if (!image_data)
     return PP_FALSE;
   // The instance parameter isn't strictly necessary but we check that it
diff --git a/ppapi/proxy/ppb_graphics_2d_proxy.cc b/ppapi/proxy/ppb_graphics_2d_proxy.cc
index 7bed679..dcf8d26 100644
--- a/ppapi/proxy/ppb_graphics_2d_proxy.cc
+++ b/ppapi/proxy/ppb_graphics_2d_proxy.cc
@@ -87,8 +87,8 @@ PP_Bool Graphics2D::Describe(PP_Size* size, PP_Bool* is_always_opaque) {
 void Graphics2D::PaintImageData(PP_Resource image_data,
                                 const PP_Point* top_left,
                                 const PP_Rect* src_rect) {
-  Resource* image_object =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(image_data);
+  Resource* image_object = PluginResourceTracker::GetInstance()->
+      GetResource(image_data);
   if (!image_object || pp_instance() != image_object->pp_instance())
     return;
 
@@ -110,8 +110,8 @@ void Graphics2D::Scroll(const PP_Rect* clip_rect,
 }
 
 void Graphics2D::ReplaceContents(PP_Resource image_data) {
-  Resource* image_object =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(image_data);
+  Resource* image_object = PluginResourceTracker::GetInstance()->
+      GetResource(image_data);
   if (!image_object || pp_instance() != image_object->pp_instance())
     return;
 
diff --git a/ppapi/proxy/ppb_instance_proxy.cc b/ppapi/proxy/ppb_instance_proxy.cc
index 7604eed..1a99b47 100644
--- a/ppapi/proxy/ppb_instance_proxy.cc
+++ b/ppapi/proxy/ppb_instance_proxy.cc
@@ -11,9 +11,9 @@
 #include "ppapi/c/ppb_mouse_lock.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/serialized_var.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/url_util_impl.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/thunk.h"
@@ -123,8 +123,7 @@ PPB_Instance_FunctionAPI* PPB_Instance_Proxy::AsPPB_Instance_FunctionAPI() {
 
 PP_Bool PPB_Instance_Proxy::BindGraphics(PP_Instance instance,
                                          PP_Resource device) {
-  Resource* object =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(device);
+  Resource* object = PluginResourceTracker::GetInstance()->GetResource(device);
   if (!object || object->pp_instance() != instance)
     return PP_FALSE;
 
diff --git a/ppapi/proxy/ppb_testing_proxy.cc b/ppapi/proxy/ppb_testing_proxy.cc
index 470d3da..836e1cf 100644
--- a/ppapi/proxy/ppb_testing_proxy.cc
+++ b/ppapi/proxy/ppb_testing_proxy.cc
@@ -7,10 +7,9 @@
 #include "base/message_loop.h"
 #include "ppapi/c/dev/ppb_testing_dev.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/resource.h"
-#include "ppapi/shared_impl/resource_tracker.h"
 
 namespace ppapi {
 namespace proxy {
@@ -20,12 +19,12 @@ namespace {
 PP_Bool ReadImageData(PP_Resource graphics_2d,
                       PP_Resource image,
                       const PP_Point* top_left) {
-  Resource* image_object =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(image);
+  Resource* image_object = PluginResourceTracker::GetInstance()->
+      GetResource(image);
   if (!image_object)
     return PP_FALSE;
   Resource* graphics_2d_object =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(graphics_2d);
+      PluginResourceTracker::GetInstance()->GetResource(graphics_2d);
   if (!graphics_2d_object ||
       image_object->pp_instance() != graphics_2d_object->pp_instance())
     return PP_FALSE;
diff --git a/ppapi/proxy/ppb_url_loader_proxy.cc b/ppapi/proxy/ppb_url_loader_proxy.cc
index 2ad3025..70c01e8 100644
--- a/ppapi/proxy/ppb_url_loader_proxy.cc
+++ b/ppapi/proxy/ppb_url_loader_proxy.cc
@@ -172,7 +172,7 @@ URLLoader::~URLLoader() {
   }
 
   if (response_info_)
-    PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(response_info_);
+    PluginResourceTracker::GetInstance()->ReleaseResource(response_info_);
 }
 
 PPB_URLLoader_API* URLLoader::AsPPB_URLLoader_API() {
@@ -240,7 +240,7 @@ PP_Resource URLLoader::GetResponseInfo() {
   }
 
   // The caller expects to get a ref, and we want to keep holding ours.
-  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(response_info_);
+  PluginResourceTracker::GetInstance()->AddRefResource(response_info_);
   return response_info_;
 }
 
diff --git a/ppapi/proxy/ppb_var_deprecated_proxy.cc b/ppapi/proxy/ppb_var_deprecated_proxy.cc
index 892fba1..6475580 100644
--- a/ppapi/proxy/ppb_var_deprecated_proxy.cc
+++ b/ppapi/proxy/ppb_var_deprecated_proxy.cc
@@ -15,7 +15,6 @@
 #include "ppapi/c/ppb_core.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
-#include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/plugin_var_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ -42,9 +41,8 @@ PluginDispatcher* CheckExceptionAndGetDispatcher(const PP_Var& object,
 
   if (object.type == PP_VARTYPE_OBJECT) {
     // Get the dispatcher for the object.
-    PluginDispatcher* dispatcher =
-        PluginGlobals::Get()->plugin_var_tracker()->
-            DispatcherForPluginObject(object);
+    PluginDispatcher* dispatcher = PluginResourceTracker::GetInstance()->
+        var_tracker().DispatcherForPluginObject(object);
     if (dispatcher)
       return dispatcher;
   }
@@ -61,11 +59,11 @@ PluginDispatcher* CheckExceptionAndGetDispatcher(const PP_Var& object,
 // PPB_Var_Deprecated plugin ---------------------------------------------------
 
 void AddRefVar(PP_Var var) {
-  PpapiGlobals::Get()->GetVarTracker()->AddRefVar(var);
+  PluginResourceTracker::GetInstance()->var_tracker().AddRefVar(var);
 }
 
 void ReleaseVar(PP_Var var) {
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var);
+  PluginResourceTracker::GetInstance()->var_tracker().ReleaseVar(var);
 }
 
 PP_Var VarFromUtf8(PP_Module module, const char* data, uint32_t len) {
diff --git a/ppapi/proxy/ppb_var_proxy.cc b/ppapi/proxy/ppb_var_proxy.cc
index 4301234..0c7cf5b 100644
--- a/ppapi/proxy/ppb_var_proxy.cc
+++ b/ppapi/proxy/ppb_var_proxy.cc
@@ -6,10 +6,10 @@
 
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/ppb_var.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
+#include "ppapi/proxy/plugin_resource_tracker.h"
+#include "ppapi/proxy/plugin_var_tracker.h"
 #include "ppapi/shared_impl/proxy_lock.h"
 #include "ppapi/shared_impl/var.h"
-#include "ppapi/shared_impl/var_tracker.h"
 
 namespace ppapi {
 namespace proxy {
@@ -20,12 +20,12 @@ namespace {
 
 void AddRefVar(PP_Var var) {
   ppapi::ProxyAutoLock lock;
-  PpapiGlobals::Get()->GetVarTracker()->AddRefVar(var);
+  PluginResourceTracker::GetInstance()->var_tracker().AddRefVar(var);
 }
 
 void ReleaseVar(PP_Var var) {
   ppapi::ProxyAutoLock lock;
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var);
+  PluginResourceTracker::GetInstance()->var_tracker().ReleaseVar(var);
 }
 
 PP_Var VarFromUtf8(PP_Module module, const char* data, uint32_t len) {
diff --git a/ppapi/proxy/ppb_video_capture_proxy.cc b/ppapi/proxy/ppb_video_capture_proxy.cc
index c771bf5..9f40c1f 100644
--- a/ppapi/proxy/ppb_video_capture_proxy.cc
+++ b/ppapi/proxy/ppb_video_capture_proxy.cc
@@ -373,11 +373,11 @@ void PPP_VideoCapture_Proxy::OnMsgOnDeviceInfo(
     const PP_VideoCaptureDeviceInfo_Dev& info,
     const std::vector<PPPVideoCapture_Buffer>& buffers) {
   EnterPluginFromHostResource<PPB_VideoCapture_API> enter(host_resource);
-  if (enter.failed() || !ppp_video_capture_impl_)
+  PluginResourceTracker* tracker = PluginResourceTracker::GetInstance();
+  PP_Resource resource = tracker->PluginResourceForHostResource(host_resource);
+  if (!resource || !ppp_video_capture_impl_ || enter.failed())
     return;
 
-  PluginResourceTracker* tracker =
-      PluginGlobals::Get()->plugin_resource_tracker();
   scoped_array<PP_Resource> resources(new PP_Resource[buffers.size()]);
   for (size_t i = 0; i < buffers.size(); ++i) {
     // We assume that the browser created a new set of resources.
@@ -386,12 +386,10 @@ void PPP_VideoCapture_Proxy::OnMsgOnDeviceInfo(
                                                       buffers[i].handle,
                                                       buffers[i].size);
   }
-
-  VideoCapture* capture = static_cast<VideoCapture*>(enter.object());
-  capture->SetBufferCount(buffers.size());
+  static_cast<VideoCapture*>(enter.object())->SetBufferCount(buffers.size());
   ppp_video_capture_impl_->OnDeviceInfo(
       host_resource.instance(),
-      capture->pp_resource(),
+      resource,
       &info,
       buffers.size(),
       resources.get());
@@ -402,38 +400,40 @@ void PPP_VideoCapture_Proxy::OnMsgOnDeviceInfo(
 void PPP_VideoCapture_Proxy::OnMsgOnStatus(const HostResource& host_resource,
                                            uint32_t status) {
   EnterPluginFromHostResource<PPB_VideoCapture_API> enter(host_resource);
-  if (enter.failed() || !ppp_video_capture_impl_)
+  PluginResourceTracker* tracker = PluginResourceTracker::GetInstance();
+  PP_Resource resource = tracker->PluginResourceForHostResource(host_resource);
+  if (!resource || !ppp_video_capture_impl_ || enter.failed())
     return;
 
-  VideoCapture* capture = static_cast<VideoCapture*>(enter.object());
-  if (!capture->OnStatus(status))
+  if (!static_cast<VideoCapture*>(enter.object())->OnStatus(status))
     return;
   ppp_video_capture_impl_->OnStatus(
-      host_resource.instance(), capture->pp_resource(), status);
+      host_resource.instance(), resource, status);
 }
 
 void PPP_VideoCapture_Proxy::OnMsgOnError(const HostResource& host_resource,
                                           uint32_t error_code) {
   EnterPluginFromHostResource<PPB_VideoCapture_API> enter(host_resource);
-  if (enter.failed() || !ppp_video_capture_impl_)
+  PluginResourceTracker* tracker = PluginResourceTracker::GetInstance();
+  PP_Resource resource = tracker->PluginResourceForHostResource(host_resource);
+  if (!resource || !ppp_video_capture_impl_ || enter.failed())
     return;
-
-  VideoCapture* capture = static_cast<VideoCapture*>(enter.object());
-  capture->set_status(PP_VIDEO_CAPTURE_STATUS_STOPPED);
+  static_cast<VideoCapture*>(enter.object())->set_status(
+      PP_VIDEO_CAPTURE_STATUS_STOPPED);
   ppp_video_capture_impl_->OnError(
-      host_resource.instance(), capture->pp_resource(), error_code);
+      host_resource.instance(), resource, error_code);
 }
 
 void PPP_VideoCapture_Proxy::OnMsgOnBufferReady(
     const HostResource& host_resource, uint32_t buffer) {
   EnterPluginFromHostResource<PPB_VideoCapture_API> enter(host_resource);
-  if (enter.failed() || !ppp_video_capture_impl_)
+  PluginResourceTracker* tracker = PluginResourceTracker::GetInstance();
+  PP_Resource resource = tracker->PluginResourceForHostResource(host_resource);
+  if (!resource || !ppp_video_capture_impl_ || enter.failed())
     return;
-
-  VideoCapture* capture = static_cast<VideoCapture*>(enter.object());
-  capture->SetBufferInUse(buffer);
+  static_cast<VideoCapture*>(enter.object())->SetBufferInUse(buffer);
   ppp_video_capture_impl_->OnBufferReady(
-      host_resource.instance(), capture->pp_resource(), buffer);
+      host_resource.instance(), resource, buffer);
 }
 
 }  // namespace proxy
diff --git a/ppapi/proxy/ppp_instance_private_proxy_unittest.cc b/ppapi/proxy/ppp_instance_private_proxy_unittest.cc
index ea57ec1..a192154 100644
--- a/ppapi/proxy/ppp_instance_private_proxy_unittest.cc
+++ b/ppapi/proxy/ppp_instance_private_proxy_unittest.cc
@@ -156,7 +156,7 @@ TEST_F(PPP_Instance_Private_ProxyTest, PPPInstancePrivate) {
 
   // Now instance_obj is valid and should have a ref-count of 1.
   PluginVarTracker& plugin_var_tracker =
-      *PluginGlobals::Get()->plugin_var_tracker();
+      PluginResourceTracker::GetInstance()->var_tracker();
   // Check the plugin-side reference count.
   EXPECT_EQ(1, plugin_var_tracker.GetRefCountForObject(instance_obj));
   // Check the host-side var and reference count.
diff --git a/ppapi/proxy/ppp_instance_proxy.cc b/ppapi/proxy/ppp_instance_proxy.cc
index 9463f28..c3e7395 100644
--- a/ppapi/proxy/ppp_instance_proxy.cc
+++ b/ppapi/proxy/ppp_instance_proxy.cc
@@ -15,7 +15,6 @@
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/ppb_url_loader_proxy.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 
 namespace ppapi {
 namespace proxy {
@@ -176,7 +175,7 @@ void PPP_Instance_Proxy::OnMsgDidCreate(
   PluginDispatcher* plugin_dispatcher =
       static_cast<PluginDispatcher*>(dispatcher());
   plugin_dispatcher->DidCreateInstance(instance);
-  PpapiGlobals::Get()->GetResourceTracker()->DidCreateInstance(instance);
+  ppapi::TrackerBase::Get()->GetResourceTracker()->DidCreateInstance(instance);
 
   // Make sure the arrays always have at least one element so we can take the
   // address below.
@@ -197,7 +196,7 @@ void PPP_Instance_Proxy::OnMsgDidCreate(
 
 void PPP_Instance_Proxy::OnMsgDidDestroy(PP_Instance instance) {
   combined_interface_->DidDestroy(instance);
-  PpapiGlobals::Get()->GetResourceTracker()->DidDeleteInstance(instance);
+  ppapi::TrackerBase::Get()->GetResourceTracker()->DidDeleteInstance(instance);
   static_cast<PluginDispatcher*>(dispatcher())->DidDestroyInstance(instance);
 }
 
@@ -236,7 +235,7 @@ void PPP_Instance_Proxy::OnMsgHandleDocumentLoad(PP_Instance instance,
   // representing all plugin references).
   // Once all references at the plugin side are released, the renderer side will
   // be notified and release the reference added in HandleDocumentLoad() above.
-  PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(plugin_loader);
+  PluginResourceTracker::GetInstance()->ReleaseResource(plugin_loader);
 }
 
 }  // namespace proxy
diff --git a/ppapi/proxy/ppp_messaging_proxy.cc b/ppapi/proxy/ppp_messaging_proxy.cc
index 60cd8c4..390794a 100644
--- a/ppapi/proxy/ppp_messaging_proxy.cc
+++ b/ppapi/proxy/ppp_messaging_proxy.cc
@@ -12,8 +12,6 @@
 #include "ppapi/proxy/plugin_var_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/serialized_var.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
-#include "ppapi/shared_impl/var_tracker.h"
 
 namespace ppapi {
 namespace proxy {
@@ -84,7 +82,7 @@ void PPP_Messaging_Proxy::OnMsgHandleMessage(
   PP_Var received_var(message_data.Get(dispatcher()));
   // SerializedVarReceiveInput will decrement the reference count, but we want
   // to give the recipient a reference.
-  PpapiGlobals::Get()->GetVarTracker()->AddRefVar(received_var);
+  PluginResourceTracker::GetInstance()->var_tracker().AddRefVar(received_var);
   ppp_messaging_impl_->HandleMessage(instance, received_var);
 }
 
diff --git a/ppapi/proxy/ppp_video_decoder_proxy.cc b/ppapi/proxy/ppp_video_decoder_proxy.cc
index 3852806..c115278 100644
--- a/ppapi/proxy/ppp_video_decoder_proxy.cc
+++ b/ppapi/proxy/ppp_video_decoder_proxy.cc
@@ -5,7 +5,6 @@
 #include "ppapi/proxy/ppp_video_decoder_proxy.h"
 
 #include "ppapi/proxy/host_dispatcher.h"
-#include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/ppb_video_decoder_proxy.h"
@@ -132,7 +131,7 @@ bool PPP_VideoDecoder_Proxy::OnMessageReceived(const IPC::Message& msg) {
 void PPP_VideoDecoder_Proxy::OnMsgProvidePictureBuffers(
     const HostResource& decoder, uint32_t req_num_of_bufs,
     const PP_Size& dimensions) {
-  PP_Resource plugin_decoder = PluginGlobals::Get()->plugin_resource_tracker()->
+  PP_Resource plugin_decoder = PluginResourceTracker::GetInstance()->
       PluginResourceForHostResource(decoder);
   ppp_video_decoder_impl_->ProvidePictureBuffers(
       decoder.instance(), plugin_decoder, req_num_of_bufs, &dimensions);
@@ -140,7 +139,7 @@ void PPP_VideoDecoder_Proxy::OnMsgProvidePictureBuffers(
 
 void PPP_VideoDecoder_Proxy::OnMsgDismissPictureBuffer(
     const HostResource& decoder, int32_t picture_id) {
-  PP_Resource plugin_decoder = PluginGlobals::Get()->plugin_resource_tracker()->
+  PP_Resource plugin_decoder = PluginResourceTracker::GetInstance()->
       PluginResourceForHostResource(decoder);
   ppp_video_decoder_impl_->DismissPictureBuffer(
       decoder.instance(), plugin_decoder, picture_id);
@@ -148,7 +147,7 @@ void PPP_VideoDecoder_Proxy::OnMsgDismissPictureBuffer(
 
 void PPP_VideoDecoder_Proxy::OnMsgPictureReady(
     const HostResource& decoder, const PP_Picture_Dev& picture) {
-  PP_Resource plugin_decoder = PluginGlobals::Get()->plugin_resource_tracker()->
+  PP_Resource plugin_decoder = PluginResourceTracker::GetInstance()->
       PluginResourceForHostResource(decoder);
   ppp_video_decoder_impl_->PictureReady(
       decoder.instance(), plugin_decoder, &picture);
@@ -156,7 +155,7 @@ void PPP_VideoDecoder_Proxy::OnMsgPictureReady(
 
 void PPP_VideoDecoder_Proxy::OnMsgNotifyEndOfStream(
     const HostResource& decoder) {
-  PP_Resource plugin_decoder = PluginGlobals::Get()->plugin_resource_tracker()->
+  PP_Resource plugin_decoder = PluginResourceTracker::GetInstance()->
       PluginResourceForHostResource(decoder);
   ppp_video_decoder_impl_->EndOfStream(decoder.instance(),
                                           plugin_decoder);
@@ -164,7 +163,7 @@ void PPP_VideoDecoder_Proxy::OnMsgNotifyEndOfStream(
 
 void PPP_VideoDecoder_Proxy::OnMsgNotifyError(
     const HostResource& decoder, PP_VideoDecodeError_Dev error) {
-  PP_Resource plugin_decoder = PluginGlobals::Get()->plugin_resource_tracker()->
+  PP_Resource plugin_decoder = PluginResourceTracker::GetInstance()->
       PluginResourceForHostResource(decoder);
   ppp_video_decoder_impl_->NotifyError(
       decoder.instance(), plugin_decoder, error);
diff --git a/ppapi/shared_impl/ppapi_globals.cc b/ppapi/shared_impl/ppapi_globals.cc
deleted file mode 100644
index 9b5e9a8..0000000
--- a/ppapi/shared_impl/ppapi_globals.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ppapi/shared_impl/ppapi_globals.h"
-
-#include "base/logging.h"
-
-namespace ppapi {
-
-PpapiGlobals* PpapiGlobals::ppapi_globals_ = NULL;
-
-PpapiGlobals::PpapiGlobals() {
-  DCHECK(!ppapi_globals_);
-  ppapi_globals_ = this;
-}
-
-PpapiGlobals::~PpapiGlobals() {
-  DCHECK(ppapi_globals_ == this);
-  ppapi_globals_ = NULL;
-}
-
-}  // namespace ppapi
diff --git a/ppapi/shared_impl/ppapi_globals.h b/ppapi/shared_impl/ppapi_globals.h
deleted file mode 100644
index 60a50d23..0000000
--- a/ppapi/shared_impl/ppapi_globals.h
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef PPAPI_SHARED_IMPL_PPAPI_GLOBALS_H_
-#define PPAPI_SHARED_IMPL_PPAPI_GLOBALS_H_
-
-#include "base/basictypes.h"
-
-namespace ppapi {
-
-class ResourceTracker;
-class VarTracker;
-
-// Abstract base class
-class PpapiGlobals {
- public:
-  PpapiGlobals();
-  virtual ~PpapiGlobals();
-
-  // Getter for the global singleton.
-  inline static PpapiGlobals* Get() { return ppapi_globals_; }
-
-  virtual ResourceTracker* GetResourceTracker() = 0;
-  virtual VarTracker* GetVarTracker() = 0;
-
- private:
-  static PpapiGlobals* ppapi_globals_;
-
-  DISALLOW_COPY_AND_ASSIGN(PpapiGlobals);
-};
-
-}  // namespace ppapi
-
-#endif  // PPAPI_SHARED_IMPL_PPAPI_GLOBALS_H_
diff --git a/ppapi/shared_impl/resource.cc b/ppapi/shared_impl/resource.cc
index 4e1f2a8..11ac86a 100644
--- a/ppapi/shared_impl/resource.cc
+++ b/ppapi/shared_impl/resource.cc
@@ -6,7 +6,7 @@
 
 #include "base/logging.h"
 #include "ppapi/shared_impl/resource_tracker.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
+#include "ppapi/shared_impl/tracker_base.h"
 
 namespace ppapi {
 
@@ -20,21 +20,21 @@ Resource::Resource(PP_Instance instance) {
   // the host resource, so we need to fill that first even though we don't
   // have a resource ID yet, then fill the resource in later.
   host_resource_ = HostResource::MakeInstanceOnly(instance);
-  pp_resource_ = PpapiGlobals::Get()->GetResourceTracker()->AddResource(this);
+  pp_resource_ = TrackerBase::Get()->GetResourceTracker()->AddResource(this);
   host_resource_.SetHostResource(instance, pp_resource_);
 }
 
 Resource::Resource(const HostResource& host_resource)
     : host_resource_(host_resource) {
-  pp_resource_ = PpapiGlobals::Get()->GetResourceTracker()->AddResource(this);
+  pp_resource_ = TrackerBase::Get()->GetResourceTracker()->AddResource(this);
 }
 
 Resource::~Resource() {
-  PpapiGlobals::Get()->GetResourceTracker()->RemoveResource(this);
+  TrackerBase::Get()->GetResourceTracker()->RemoveResource(this);
 }
 
 PP_Resource Resource::GetReference() {
-  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(pp_resource());
+  TrackerBase::Get()->GetResourceTracker()->AddRefResource(pp_resource());
   return pp_resource();
 }
 
diff --git a/ppapi/shared_impl/resource_tracker_unittest.cc b/ppapi/shared_impl/resource_tracker_unittest.cc
index 2e22d6a..371f6e77 100644
--- a/ppapi/shared_impl/resource_tracker_unittest.cc
+++ b/ppapi/shared_impl/resource_tracker_unittest.cc
@@ -7,7 +7,6 @@
 #include "base/compiler_specific.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/shared_impl/resource_tracker.h"
-#include "ppapi/shared_impl/test_globals.h"
 #include "ppapi/shared_impl/tracker_base.h"
 
 namespace ppapi {
@@ -69,14 +68,20 @@ class ResourceTrackerTest : public testing::Test, public TrackerBase {
       ppapi::proxy::InterfaceID id) OVERRIDE {
     return NULL;
   }
+  virtual VarTracker* GetVarTracker() OVERRIDE {
+    return NULL;
+  }
+  virtual ResourceTracker* GetResourceTracker() OVERRIDE {
+    return &resource_tracker_;
+  }
   virtual PP_Module GetModuleForInstance(PP_Instance /* instance */) OVERRIDE {
     return 0;
   }
 
-  ResourceTracker& resource_tracker() { return *globals_.GetResourceTracker(); }
+  ResourceTracker& resource_tracker() { return resource_tracker_; }
 
  private:
-  TestGlobals globals_;
+  ResourceTracker resource_tracker_;
 };
 
 // Test that LastPluginRefWasDeleted is called when the last plugin ref was
diff --git a/ppapi/shared_impl/scoped_pp_resource.cc b/ppapi/shared_impl/scoped_pp_resource.cc
index 8399208..d5a9748 100644
--- a/ppapi/shared_impl/scoped_pp_resource.cc
+++ b/ppapi/shared_impl/scoped_pp_resource.cc
@@ -4,9 +4,9 @@
 
 #include "ppapi/shared_impl/scoped_pp_resource.h"
 
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/shared_impl/resource_tracker.h"
+#include "ppapi/shared_impl/tracker_base.h"
 
 namespace ppapi {
 
@@ -64,12 +64,12 @@ PP_Resource ScopedPPResource::Release() {
 
 void ScopedPPResource::CallAddRef() {
   if (id_)
-    PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(id_);
+    TrackerBase::Get()->GetResourceTracker()->AddRefResource(id_);
 }
 
 void ScopedPPResource::CallRelease() {
   if (id_)
-    PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(id_);
+    TrackerBase::Get()->GetResourceTracker()->ReleaseResource(id_);
 }
 
 }  // namespace ppapi
diff --git a/ppapi/shared_impl/test_globals.cc b/ppapi/shared_impl/test_globals.cc
deleted file mode 100644
index 17ac224..0000000
--- a/ppapi/shared_impl/test_globals.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ppapi/shared_impl/test_globals.h"
-
-namespace ppapi {
-
-TestGlobals::TestGlobals() : ppapi::PpapiGlobals() {
-}
-
-TestGlobals::~TestGlobals() {
-}
-
-ResourceTracker* TestGlobals::GetResourceTracker() {
-  return &resource_tracker_;
-}
-
-VarTracker* TestGlobals::GetVarTracker() {
-  return &var_tracker_;
-}
-
-}  // namespace ppapi
diff --git a/ppapi/shared_impl/test_globals.h b/ppapi/shared_impl/test_globals.h
deleted file mode 100644
index c2062b7..0000000
--- a/ppapi/shared_impl/test_globals.h
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef PPAPI_SHARED_IMPL_TEST_GLOBALS_H_
-#define PPAPI_SHARED_IMPL_TEST_GLOBALS_H_
-
-#include "base/compiler_specific.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
-#include "ppapi/shared_impl/resource_tracker.h"
-#include "ppapi/shared_impl/var_tracker.h"
-
-namespace ppapi {
-
-// Implementation of PpapiGlobals for tests that don't need either the host- or
-// plugin-specific implementations.
-class TestGlobals : public PpapiGlobals {
- public:
-  TestGlobals();
-  virtual ~TestGlobals();
-
-  // PpapiGlobals implementation.
-  virtual ResourceTracker* GetResourceTracker() OVERRIDE;
-  virtual VarTracker* GetVarTracker() OVERRIDE;
-
- private:
-  ResourceTracker resource_tracker_;
-  VarTracker var_tracker_;
-
-  DISALLOW_COPY_AND_ASSIGN(TestGlobals);
-};
-
-}  // namespace ppapi
-
-#endif   // PPAPI_SHARED_IMPL_TEST_GLOBALS_H_
diff --git a/ppapi/shared_impl/tracker_base.h b/ppapi/shared_impl/tracker_base.h
index 940cef4..9ff19d4 100644
--- a/ppapi/shared_impl/tracker_base.h
+++ b/ppapi/shared_impl/tracker_base.h
@@ -44,6 +44,9 @@ class PPAPI_SHARED_EXPORT TrackerBase {
   virtual FunctionGroupBase* GetFunctionAPI(PP_Instance inst,
                                             proxy::InterfaceID id) = 0;
 
+  virtual VarTracker* GetVarTracker() = 0;
+  virtual ResourceTracker* GetResourceTracker() = 0;
+
   // Returns the PP_Module associated with the given PP_Instance, or 0 on
   // failure.
   virtual PP_Module GetModuleForInstance(PP_Instance instance) = 0;
diff --git a/ppapi/shared_impl/url_util_impl.cc b/ppapi/shared_impl/url_util_impl.cc
index d295fd7..5bced6c 100644
--- a/ppapi/shared_impl/url_util_impl.cc
+++ b/ppapi/shared_impl/url_util_impl.cc
@@ -5,7 +5,6 @@
 #include "ppapi/shared_impl/url_util_impl.h"
 
 #include "googleurl/src/gurl.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/tracker_base.h"
 #include "ppapi/shared_impl/var.h"
 #include "ppapi/shared_impl/var_tracker.h"
@@ -107,7 +106,7 @@ PP_Var URLUtilImpl::ConvertComponentsAndReturnURL(
     return url;
 
   PP_Var result = Canonicalize(url, components);
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(url);
+  TrackerBase::Get()->GetVarTracker()->ReleaseVar(url);
   return result;
 }
 
diff --git a/ppapi/shared_impl/var.cc b/ppapi/shared_impl/var.cc
index edf339a..165b8ff 100644
--- a/ppapi/shared_impl/var.cc
+++ b/ppapi/shared_impl/var.cc
@@ -10,7 +10,7 @@
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "ppapi/c/pp_var.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
+#include "ppapi/shared_impl/tracker_base.h"
 #include "ppapi/shared_impl/var_tracker.h"
 
 namespace ppapi {
@@ -78,7 +78,7 @@ int32 Var::GetExistingVarID() const {
 }
 
 int32 Var::GetOrCreateVarID() {
-  VarTracker* tracker = PpapiGlobals::Get()->GetVarTracker();
+  VarTracker* tracker = TrackerBase::Get()->GetVarTracker();
   if (var_id_) {
     if (!tracker->AddRefVar(var_id_))
       return 0;
@@ -148,7 +148,7 @@ StringVar* StringVar::FromPPVar(PP_Var var) {
   if (var.type != PP_VARTYPE_STRING)
     return NULL;
   scoped_refptr<Var> var_object(
-      PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
+      TrackerBase::Get()->GetVarTracker()->GetVar(var));
   if (!var_object)
     return NULL;
   return var_object->AsStringVar();
diff --git a/ppapi/shared_impl/video_decoder_impl.cc b/ppapi/shared_impl/video_decoder_impl.cc
index 0b6d4e5..71921f92 100644
--- a/ppapi/shared_impl/video_decoder_impl.cc
+++ b/ppapi/shared_impl/video_decoder_impl.cc
@@ -32,14 +32,14 @@ void VideoDecoderImpl::InitCommon(
   DCHECK(graphics_context);
   DCHECK(!gles2_impl_ && !graphics_context_);
   gles2_impl_ = gles2_impl;
-  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(graphics_context);
+  TrackerBase::Get()->GetResourceTracker()->AddRefResource(graphics_context);
   graphics_context_ = graphics_context;
 }
 
 void VideoDecoderImpl::Destroy() {
   graphics_context_ = 0;
   gles2_impl_ = NULL;
-  PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(graphics_context_);
+  TrackerBase::Get()->GetResourceTracker()->ReleaseResource(graphics_context_);
 }
 
 bool VideoDecoderImpl::SetFlushCallback(PP_CompletionCallback callback) {
diff --git a/ppapi/thunk/enter.h b/ppapi/thunk/enter.h
index faa556d..34fb706 100644
--- a/ppapi/thunk/enter.h
+++ b/ppapi/thunk/enter.h
@@ -9,11 +9,10 @@
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/proxy/interface_id.h"
 #include "ppapi/shared_impl/function_group_base.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/proxy_lock.h"
 #include "ppapi/shared_impl/resource.h"
-#include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/shared_impl/tracker_base.h"
+#include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/thunk/ppapi_thunk_export.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
@@ -117,7 +116,7 @@ class EnterFunctionGivenResource : public EnterFunction<FunctionsT> {
  private:
   static PP_Instance GetInstanceForResource(PP_Resource resource) {
     Resource* object =
-        PpapiGlobals::Get()->GetResourceTracker()->GetResource(resource);
+        TrackerBase::Get()->GetResourceTracker()->GetResource(resource);
     return object ? object->pp_instance() : 0;
   }
 };
@@ -129,8 +128,7 @@ class EnterResource : subtle::LockOnEntry<lock_on_entry> {
  public:
   EnterResource(PP_Resource resource, bool report_error)
       : object_(NULL) {
-    resource_ =
-        PpapiGlobals::Get()->GetResourceTracker()->GetResource(resource);
+    resource_ = TrackerBase::Get()->GetResourceTracker()->GetResource(resource);
     if (resource_)
       object_ = resource_->GetAs<ResourceT>();
     // TODO(brettw) check error and if report_error is set, do something.
diff --git a/webkit/glue/webkit_glue.gypi b/webkit/glue/webkit_glue.gypi
index 6f9b624..6ccde32 100644
--- a/webkit/glue/webkit_glue.gypi
+++ b/webkit/glue/webkit_glue.gypi
@@ -204,8 +204,6 @@
         '../plugins/ppapi/file_type_conversions.cc',
         '../plugins/ppapi/file_type_conversions.h',
         '../plugins/ppapi/fullscreen_container.h',
-        '../plugins/ppapi/host_globals.cc',
-        '../plugins/ppapi/host_globals.h',
         '../plugins/ppapi/message_channel.cc',
         '../plugins/ppapi/message_channel.h',
         '../plugins/ppapi/npapi_glue.cc',
diff --git a/webkit/plugins/ppapi/callbacks_unittest.cc b/webkit/plugins/ppapi/callbacks_unittest.cc
index b11c725..30e534b 100644
--- a/webkit/plugins/ppapi/callbacks_unittest.cc
+++ b/webkit/plugins/ppapi/callbacks_unittest.cc
@@ -9,7 +9,6 @@
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "webkit/plugins/ppapi/callbacks.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/mock_resource.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
@@ -185,8 +184,7 @@ class CallbackResourceTest : public PpapiUnittest {
 
 // Test that callbacks get aborted on the last resource unref.
 TEST_F(CallbackResourceTest, AbortOnNoRef) {
-  ResourceTracker* resource_tracker =
-      HostGlobals::Get()->host_resource_tracker();
+  ResourceTracker* resource_tracker = ResourceTracker::Get();
 
   // Test several things: Unref-ing a resource (to zero refs) with callbacks
   // which (1) have been run, (2) have been aborted, (3) haven't been completed.
@@ -225,8 +223,7 @@ TEST_F(CallbackResourceTest, AbortOnNoRef) {
 // Test that "resurrecting" a resource (getting a new ID for a |Resource|)
 // doesn't resurrect callbacks.
 TEST_F(CallbackResourceTest, Resurrection) {
-  ResourceTracker* resource_tracker =
-      HostGlobals::Get()->host_resource_tracker();
+  ResourceTracker* resource_tracker = ResourceTracker::Get();
 
   scoped_refptr<CallbackMockResource> resource(
       new CallbackMockResource(instance()->pp_instance()));
diff --git a/webkit/plugins/ppapi/host_globals.cc b/webkit/plugins/ppapi/host_globals.cc
deleted file mode 100644
index 3a3626f..0000000
--- a/webkit/plugins/ppapi/host_globals.cc
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "webkit/plugins/ppapi/host_globals.h"
-
-namespace webkit {
-namespace ppapi {
-
-HostGlobals* HostGlobals::host_globals_ = NULL;
-
-HostGlobals::HostGlobals() : ::ppapi::PpapiGlobals() {
-  DCHECK(!host_globals_);
-  host_globals_ = this;
-}
-
-HostGlobals::~HostGlobals() {
-  DCHECK(host_globals_ == this);
-  host_globals_ = NULL;
-}
-
-::ppapi::ResourceTracker* HostGlobals::GetResourceTracker() {
-  return &host_resource_tracker_;
-}
-
-::ppapi::VarTracker* HostGlobals::GetVarTracker() {
-  return &host_var_tracker_;
-}
-
-}  // namespace ppapi
-}  // namespace webkit
diff --git a/webkit/plugins/ppapi/host_globals.h b/webkit/plugins/ppapi/host_globals.h
deleted file mode 100644
index 69b18d0..0000000
--- a/webkit/plugins/ppapi/host_globals.h
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef WEBKIT_PLUGINS_PPAPI_HOST_GLOBALS_H_
-#define WEBKIT_PLUGINS_PPAPI_HOST_GLOBALS_H_
-
-#include "base/compiler_specific.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
-#include "ppapi/shared_impl/var_tracker.h"
-#include "webkit/plugins/ppapi/resource_tracker.h"
-
-namespace webkit {
-namespace ppapi {
-
-class HostGlobals : public ::ppapi::PpapiGlobals {
- public:
-  HostGlobals();
-  virtual ~HostGlobals();
-
-  // Getter for the global singleton. Generally, you should use
-  // PpapiGlobals::Get() when possible. Use this only when you need some
-  // host-specific functionality.
-  inline static HostGlobals* Get() { return host_globals_; }
-
-  // PpapiGlobals implementation.
-  virtual ::ppapi::ResourceTracker* GetResourceTracker() OVERRIDE;
-  virtual ::ppapi::VarTracker* GetVarTracker() OVERRIDE;
-
-  ResourceTracker* host_resource_tracker() { return &host_resource_tracker_; }
-
- private:
-  static HostGlobals* host_globals_;
-
-  ResourceTracker host_resource_tracker_;
-  ::ppapi::VarTracker host_var_tracker_;
-
-  DISALLOW_COPY_AND_ASSIGN(HostGlobals);
-};
-
-}  // namespace ppapi
-}  // namespace webkit
-
-#endif   // WEBKIT_PLUGINS_PPAPI_HOST_GLOBALS_H_
diff --git a/webkit/plugins/ppapi/npapi_glue.cc b/webkit/plugins/ppapi/npapi_glue.cc
index dceb25b..cdb49d5 100644
--- a/webkit/plugins/ppapi/npapi_glue.cc
+++ b/webkit/plugins/ppapi/npapi_glue.cc
@@ -7,7 +7,6 @@
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/string_util.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/npobject_var.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/plugin_object.h"
@@ -18,7 +17,6 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h"
 
 using ppapi::NPObjectVar;
-using ppapi::PpapiGlobals;
 using ppapi::StringVar;
 using ppapi::Var;
 using WebKit::WebBindings;
@@ -134,8 +132,8 @@ PP_Var NPIdentifierToPPVar(PP_Module module, NPIdentifier id) {
 PP_Var NPObjectToPPVar(PluginInstance* instance, NPObject* object) {
   DCHECK(object);
   scoped_refptr<NPObjectVar> object_var(
-      HostGlobals::Get()->host_resource_tracker()->NPObjectVarForNPObject(
-          instance->pp_instance(), object));
+      ResourceTracker::Get()->NPObjectVarForNPObject(instance->pp_instance(),
+                                                     object));
   if (!object_var) {  // No object for this module yet, make a new one.
     object_var = new NPObjectVar(instance->module()->pp_module(),
                                  instance->pp_instance(), object);
@@ -161,7 +159,7 @@ PPResultAndExceptionToNPResult::~PPResultAndExceptionToNPResult() {
   // been lost.
   DCHECK(checked_exception_);
 
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(exception_);
+  ResourceTracker::Get()->GetVarTracker()->ReleaseVar(exception_);
 }
 
 // Call this with the return value of the PPAPI function. It will convert
@@ -186,7 +184,7 @@ bool PPResultAndExceptionToNPResult::SetResult(PP_Var result) {
   // No matter what happened, we need to release the reference to the
   // value passed in. On success, a reference to this value will be in
   // the np_result_.
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(result);
+  ResourceTracker::Get()->GetVarTracker()->ReleaseVar(result);
   return success_;
 }
 
@@ -238,7 +236,7 @@ PPVarArrayFromNPVariantArray::PPVarArrayFromNPVariantArray(
 }
 
 PPVarArrayFromNPVariantArray::~PPVarArrayFromNPVariantArray() {
-  ::ppapi::VarTracker* var_tracker = PpapiGlobals::Get()->GetVarTracker();
+  ::ppapi::VarTracker* var_tracker = ResourceTracker::Get()->GetVarTracker();
   for (size_t i = 0; i < size_; i++)
     var_tracker->ReleaseVar(array_[i]);
 }
@@ -250,7 +248,7 @@ PPVarFromNPObject::PPVarFromNPObject(PluginInstance* instance, NPObject* object)
 }
 
 PPVarFromNPObject::~PPVarFromNPObject() {
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var_);
+  ResourceTracker::Get()->GetVarTracker()->ReleaseVar(var_);
 }
 
 // NPObjectAccessorWithIdentifier ----------------------------------------------
@@ -270,7 +268,7 @@ NPObjectAccessorWithIdentifier::NPObjectAccessorWithIdentifier(
 }
 
 NPObjectAccessorWithIdentifier::~NPObjectAccessorWithIdentifier() {
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(identifier_);
+  ResourceTracker::Get()->GetVarTracker()->ReleaseVar(identifier_);
 }
 
 // TryCatch --------------------------------------------------------------------
diff --git a/webkit/plugins/ppapi/npobject_var.cc b/webkit/plugins/ppapi/npobject_var.cc
index f87bea4..e430dd2 100644
--- a/webkit/plugins/ppapi/npobject_var.cc
+++ b/webkit/plugins/ppapi/npobject_var.cc
@@ -7,10 +7,8 @@
 #include "base/logging.h"
 #include "ppapi/c/pp_var.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
 
-using webkit::ppapi::HostGlobals;
 using WebKit::WebBindings;
 
 namespace ppapi {
@@ -24,12 +22,12 @@ NPObjectVar::NPObjectVar(PP_Module module,
       pp_instance_(instance),
       np_object_(np_object) {
   WebBindings::retainObject(np_object_);
-  HostGlobals::Get()->host_resource_tracker()->AddNPObjectVar(this);
+  webkit::ppapi::ResourceTracker::Get()->AddNPObjectVar(this);
 }
 
 NPObjectVar::~NPObjectVar() {
   if (pp_instance())
-    HostGlobals::Get()->host_resource_tracker()->RemoveNPObjectVar(this);
+    webkit::ppapi::ResourceTracker::Get()->RemoveNPObjectVar(this);
   WebBindings::releaseObject(np_object_);
 }
 
@@ -62,7 +60,7 @@ scoped_refptr<NPObjectVar> NPObjectVar::FromPPVar(PP_Var var) {
   if (var.type != PP_VARTYPE_OBJECT)
     return scoped_refptr<NPObjectVar>(NULL);
   scoped_refptr<Var> var_object(
-      PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
+      webkit::ppapi::ResourceTracker::Get()->GetVarTracker()->GetVar(var));
   if (!var_object)
     return scoped_refptr<NPObjectVar>();
   return scoped_refptr<NPObjectVar>(var_object->AsNPObjectVar());
diff --git a/webkit/plugins/ppapi/plugin_module.cc b/webkit/plugins/ppapi/plugin_module.cc
index ce0cee2..f4db023 100644
--- a/webkit/plugins/ppapi/plugin_module.cc
+++ b/webkit/plugins/ppapi/plugin_module.cc
@@ -90,7 +90,6 @@
 #include "webkit/plugins/plugin_switches.h"
 #include "webkit/plugins/ppapi/callbacks.h"
 #include "webkit/plugins/ppapi/common.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/ppapi_interface_factory.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/ppb_directory_reader_impl.h"
@@ -115,7 +114,6 @@
 #include "webkit/plugins/ppapi/resource_tracker.h"
 #include "webkit/plugins/ppapi/webkit_forwarding_impl.h"
 
-using ppapi::PpapiGlobals;
 using ppapi::TimeTicksToPPTimeTicks;
 using ppapi::TimeToPPTime;
 using ppapi::thunk::EnterResource;
@@ -126,14 +124,6 @@ namespace ppapi {
 
 namespace {
 
-// Global tracking info for PPAPI plugins. This is lazily created before the
-// first plugin is allocated, and leaked on shutdown.
-//
-// Note that we don't want a Singleton here since destroying this object will
-// try to free some stuff that requires WebKit, and Singletons are destroyed
-// after WebKit.
-webkit::ppapi::HostGlobals* host_globals = NULL;
-
 // Maintains all currently loaded plugin libs for validating PP_Module
 // identifiers.
 typedef std::set<PluginModule*> PluginModuleSet;
@@ -152,11 +142,11 @@ base::MessageLoopProxy* GetMainThreadMessageLoop() {
 // PPB_Core --------------------------------------------------------------------
 
 void AddRefResource(PP_Resource resource) {
-  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(resource);
+  ResourceTracker::Get()->AddRefResource(resource);
 }
 
 void ReleaseResource(PP_Resource resource) {
-  PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(resource);
+  ResourceTracker::Get()->ReleaseResource(resource);
 }
 
 PP_Time GetTime() {
@@ -215,8 +205,7 @@ void QuitMessageLoop(PP_Instance instance) {
 }
 
 uint32_t GetLiveObjectsForInstance(PP_Instance instance_id) {
-  return HostGlobals::Get()->host_resource_tracker()->GetLiveObjectsForInstance(
-      instance_id);
+  return ResourceTracker::Get()->GetLiveObjectsForInstance(instance_id);
 }
 
 PP_Bool IsOutOfProcess() {
@@ -382,12 +371,8 @@ PluginModule::PluginModule(const std::string& name,
       name_(name),
       path_(path),
       reserve_instance_id_(NULL) {
-  // Ensure the globals object is created.
-  if (!host_globals)
-    host_globals = new HostGlobals;
-
   memset(&entry_points_, 0, sizeof(entry_points_));
-  pp_module_ = HostGlobals::Get()->host_resource_tracker()->AddModule(this);
+  pp_module_ = ResourceTracker::Get()->AddModule(this);
   GetMainThreadMessageLoop();  // Initialize the main thread message loop.
   GetLivePluginSet()->insert(this);
 }
@@ -413,7 +398,7 @@ PluginModule::~PluginModule() {
     base::UnloadNativeLibrary(library_);
 
   // Notifications that we've been deleted should be last.
-  HostGlobals::Get()->host_resource_tracker()->ModuleDeleted(pp_module_);
+  ResourceTracker::Get()->ModuleDeleted(pp_module_);
   if (!is_crashed_) {
     // When the plugin crashes, we immediately tell the lifetime delegate that
     // we're gone, so we don't want to tell it again.
diff --git a/webkit/plugins/ppapi/plugin_object.cc b/webkit/plugins/ppapi/plugin_object.cc
index fbbd349..7b58456 100644
--- a/webkit/plugins/ppapi/plugin_object.cc
+++ b/webkit/plugins/ppapi/plugin_object.cc
@@ -15,7 +15,6 @@
 #include "ppapi/c/dev/ppp_class_deprecated.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/var.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h"
 #include "webkit/plugins/ppapi/npapi_glue.h"
@@ -24,7 +23,6 @@
 #include "webkit/plugins/ppapi/resource_tracker.h"
 #include "webkit/plugins/ppapi/string.h"
 
-using ppapi::PpapiGlobals;
 using ppapi::StringVar;
 using ppapi::Var;
 using WebKit::WebBindings;
@@ -152,7 +150,7 @@ bool WrapperClass_SetProperty(NPObject* object, NPIdentifier property_name,
   accessor.object()->ppp_class()->SetProperty(
       accessor.object()->ppp_class_data(), accessor.identifier(), value_var,
       result_converter.exception());
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(value_var);
+  ResourceTracker::Get()->GetVarTracker()->ReleaseVar(value_var);
   return result_converter.CheckExceptionForNoResult();
 }
 
@@ -217,7 +215,7 @@ bool WrapperClass_Enumerate(NPObject* object, NPIdentifier** values,
 
   // Release the PP_Var that the plugin allocated. On success, they will all
   // be converted to NPVariants, and on failure, we want them to just go away.
-  ::ppapi::VarTracker* var_tracker = PpapiGlobals::Get()->GetVarTracker();
+  ::ppapi::VarTracker* var_tracker = ResourceTracker::Get()->GetVarTracker();
   for (uint32_t i = 0; i < property_count; ++i)
     var_tracker->ReleaseVar(properties[i]);
   free(properties);
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.cc b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
index 6e3be13..5ec687d 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.cc
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
@@ -62,7 +62,6 @@
 #include "webkit/plugins/ppapi/common.h"
 #include "webkit/plugins/ppapi/event_conversion.h"
 #include "webkit/plugins/ppapi/fullscreen_container.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/message_channel.h"
 #include "webkit/plugins/ppapi/npapi_glue.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
@@ -103,7 +102,6 @@
 
 using base::StringPrintf;
 using ppapi::InputEventImpl;
-using ppapi::PpapiGlobals;
 using ppapi::StringVar;
 using ppapi::thunk::EnterResourceNoLock;
 using ppapi::thunk::PPB_Buffer_API;
@@ -244,8 +242,7 @@ void RectToPPRect(const gfx::Rect& input, PP_Rect* output) {
 // unchanged.
 bool SecurityOriginForInstance(PP_Instance instance_id,
                                WebKit::WebSecurityOrigin* security_origin) {
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return false;
 
@@ -309,7 +306,7 @@ PluginInstance::PluginInstance(
       text_input_caret_bounds_(0, 0, 0, 0),
       text_input_caret_set_(false),
       lock_mouse_callback_(PP_BlockUntilComplete()) {
-  pp_instance_ = HostGlobals::Get()->host_resource_tracker()->AddInstance(this);
+  pp_instance_ = ResourceTracker::Get()->AddInstance(this);
 
   memset(&current_print_settings_, 0, sizeof(current_print_settings_));
   DCHECK(delegate);
@@ -338,7 +335,7 @@ PluginInstance::~PluginInstance() {
   delegate_->InstanceDeleted(this);
   module_->InstanceDeleted(this);
 
-  HostGlobals::Get()->host_resource_tracker()->InstanceDeleted(pp_instance_);
+  ResourceTracker::Get()->InstanceDeleted(pp_instance_);
 }
 
 // NOTE: Any of these methods that calls into the plugin needs to take into
@@ -426,7 +423,7 @@ void PluginInstance::CommitBackingTexture() {
 
 void PluginInstance::InstanceCrashed() {
   // Force free all resources and vars.
-  HostGlobals::Get()->host_resource_tracker()->InstanceCrashed(pp_instance());
+  ResourceTracker::Get()->InstanceCrashed(pp_instance());
 
   // Free any associated graphics.
   SetFullscreen(false, false);
@@ -873,7 +870,7 @@ string16 PluginInstance::GetSelectedText(bool html) {
   if (string)
     selection = UTF8ToUTF16(string->value());
   // Release the ref the plugin transfered to us.
-  HostGlobals::Get()->GetVarTracker()->ReleaseVar(rv);
+  ResourceTracker::Get()->GetVarTracker()->ReleaseVar(rv);
   return selection;
 }
 
@@ -892,7 +889,7 @@ string16 PluginInstance::GetLinkAtPosition(const gfx::Point& point) {
   if (string)
     link = UTF8ToUTF16(string->value());
   // Release the ref the plugin transfered to us.
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(rv);
+  ResourceTracker::Get()->GetVarTracker()->ReleaseVar(rv);
   return link;
 }
 
diff --git a/webkit/plugins/ppapi/ppb_audio_impl.cc b/webkit/plugins/ppapi/ppb_audio_impl.cc
index ea73f38..e0f26e5 100644
--- a/webkit/plugins/ppapi/ppb_audio_impl.cc
+++ b/webkit/plugins/ppapi/ppb_audio_impl.cc
@@ -17,7 +17,6 @@
 #include "webkit/plugins/ppapi/common.h"
 #include "webkit/plugins/ppapi/resource_helper.h"
 
-using ppapi::PpapiGlobals;
 using ppapi::thunk::EnterResourceNoLock;
 using ppapi::thunk::PPB_Audio_API;
 using ppapi::thunk::PPB_AudioConfig_API;
@@ -95,7 +94,7 @@ bool PPB_Audio_Impl::Init(PP_Resource config,
 
 PP_Resource PPB_Audio_Impl::GetCurrentConfig() {
   // AddRef on behalf of caller, while keeping a ref for ourselves.
-  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(config_);
+  ::ppapi::TrackerBase::Get()->GetResourceTracker()->AddRefResource(config_);
   return config_;
 }
 
diff --git a/webkit/plugins/ppapi/ppb_directory_reader_impl.cc b/webkit/plugins/ppapi/ppb_directory_reader_impl.cc
index 63279cd..da7112b 100644
--- a/webkit/plugins/ppapi/ppb_directory_reader_impl.cc
+++ b/webkit/plugins/ppapi/ppb_directory_reader_impl.cc
@@ -9,7 +9,6 @@
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/dev/ppb_directory_reader_dev.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_file_ref_api.h"
 #include "webkit/plugins/ppapi/common.h"
@@ -22,7 +21,6 @@
 #include "webkit/plugins/ppapi/resource_helper.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
 
-using ::ppapi::PpapiGlobals;
 using ::ppapi::thunk::EnterResourceNoLock;
 using ::ppapi::thunk::PPB_DirectoryReader_API;
 using ::ppapi::thunk::PPB_FileRef_API;
@@ -130,10 +128,8 @@ bool PPB_DirectoryReader_Impl::FillUpEntry() {
   if (!entries_.empty()) {
     base::FileUtilProxy::Entry dir_entry = entries_.front();
     entries_.pop();
-    if (entry_->file_ref) {
-      PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(
-          entry_->file_ref);
-    }
+    if (entry_->file_ref)
+      ResourceTracker::Get()->ReleaseResource(entry_->file_ref);
 
     PPB_FileRef_Impl* file_ref = PPB_FileRef_Impl::CreateInternal(
         directory_ref_->file_system()->pp_resource(),
diff --git a/webkit/plugins/ppapi/ppb_flash_clipboard_impl.cc b/webkit/plugins/ppapi/ppb_flash_clipboard_impl.cc
index fdffadf..73ad13e 100644
--- a/webkit/plugins/ppapi/ppb_flash_clipboard_impl.cc
+++ b/webkit/plugins/ppapi/ppb_flash_clipboard_impl.cc
@@ -18,7 +18,6 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKitPlatformSupport.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
 #include "webkit/plugins/ppapi/common.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
@@ -65,8 +64,7 @@ PP_Bool IsFormatAvailable(PP_Instance instance_id,
                           PP_Flash_Clipboard_Type clipboard_type,
                           PP_Flash_Clipboard_Format format) {
   // If you don't give us an instance, we don't give you anything.
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return PP_FALSE;
 
@@ -84,8 +82,7 @@ PP_Bool IsFormatAvailable(PP_Instance instance_id,
 
 PP_Var ReadPlainText(PP_Instance instance_id,
                      PP_Flash_Clipboard_Type clipboard_type) {
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(instance_id);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return PP_MakeNull();
 
diff --git a/webkit/plugins/ppapi/ppb_flash_file_impl.cc b/webkit/plugins/ppapi/ppb_flash_file_impl.cc
index 47b18f8..de8b939 100644
--- a/webkit/plugins/ppapi/ppb_flash_file_impl.cc
+++ b/webkit/plugins/ppapi/ppb_flash_file_impl.cc
@@ -16,7 +16,6 @@
 #include "webkit/plugins/ppapi/common.h"
 #include "webkit/plugins/ppapi/file_path.h"
 #include "webkit/plugins/ppapi/file_type_conversions.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
@@ -67,8 +66,7 @@ int32_t OpenModuleLocalFile(PP_Instance pp_instance,
   if (!path || !PepperFileOpenFlagsToPlatformFileFlags(mode, &flags) || !file)
     return PP_ERROR_BADARGUMENT;
 
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
     return PP_ERROR_FAILED;
 
@@ -87,8 +85,7 @@ int32_t RenameModuleLocalFile(PP_Instance pp_instance,
   if (!from_path || !to_path)
     return PP_ERROR_BADARGUMENT;
 
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
     return PP_ERROR_FAILED;
 
@@ -104,8 +101,7 @@ int32_t DeleteModuleLocalFileOrDir(PP_Instance pp_instance,
   if (!path)
     return PP_ERROR_BADARGUMENT;
 
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
     return PP_ERROR_FAILED;
 
@@ -119,8 +115,7 @@ int32_t CreateModuleLocalDir(PP_Instance pp_instance, const char* path) {
   if (!path)
     return PP_ERROR_BADARGUMENT;
 
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
     return PP_ERROR_FAILED;
 
@@ -135,8 +130,7 @@ int32_t QueryModuleLocalFile(PP_Instance pp_instance,
   if (!path || !info)
     return PP_ERROR_BADARGUMENT;
 
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
     return PP_ERROR_FAILED;
 
@@ -163,8 +157,7 @@ int32_t GetModuleLocalDirContents(PP_Instance pp_instance,
                                   PP_DirContents_Dev** contents) {
   if (!path || !contents)
     return PP_ERROR_BADARGUMENT;
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
     return PP_ERROR_FAILED;
 
diff --git a/webkit/plugins/ppapi/ppb_flash_impl.cc b/webkit/plugins/ppapi/ppb_flash_impl.cc
index 78d5677..58354db 100644
--- a/webkit/plugins/ppapi/ppb_flash_impl.cc
+++ b/webkit/plugins/ppapi/ppb_flash_impl.cc
@@ -14,7 +14,6 @@
 #include "ppapi/shared_impl/var.h"
 #include "ppapi/thunk/enter.h"
 #include "webkit/plugins/ppapi/common.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
@@ -33,16 +32,14 @@ namespace ppapi {
 namespace {
 
 void SetInstanceAlwaysOnTop(PP_Instance pp_instance, PP_Bool on_top) {
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
     return;
   instance->set_always_on_top(PPBoolToBool(on_top));
 }
 
 PP_Var GetProxyForURL(PP_Instance pp_instance, const char* url) {
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
     return PP_MakeUndefined();
 
@@ -86,8 +83,7 @@ void QuitMessageLoop(PP_Instance instance) {
 }
 
 double GetLocalTimeZoneOffset(PP_Instance pp_instance, PP_Time t) {
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
     return 0.0;
 
@@ -105,8 +101,7 @@ double GetLocalTimeZoneOffset(PP_Instance pp_instance, PP_Time t) {
 }
 
 PP_Var GetCommandLineArgs(PP_Module pp_module) {
-  PluginModule* module =
-      HostGlobals::Get()->host_resource_tracker()->GetModule(pp_module);
+  PluginModule* module = ResourceTracker::Get()->GetModule(pp_module);
   if (!module)
     return PP_MakeUndefined();
 
diff --git a/webkit/plugins/ppapi/ppb_proxy_impl.cc b/webkit/plugins/ppapi/ppb_proxy_impl.cc
index 884ad7d..ece3410 100644
--- a/webkit/plugins/ppapi/ppb_proxy_impl.cc
+++ b/webkit/plugins/ppapi/ppb_proxy_impl.cc
@@ -7,13 +7,11 @@
 #include "ppapi/c/private/ppb_proxy_private.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_image_data_api.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/ppb_url_loader_impl.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
 
-using ppapi::PpapiGlobals;
 using ppapi::thunk::EnterResource;
 using ppapi::thunk::PPB_URLLoader_API;
 
@@ -23,15 +21,13 @@ namespace ppapi {
 namespace {
 
 void PluginCrashed(PP_Module module) {
-  PluginModule* plugin_module =
-      HostGlobals::Get()->host_resource_tracker()->GetModule(module);
+  PluginModule* plugin_module = ResourceTracker::Get()->GetModule(module);
   if (plugin_module)
     plugin_module->PluginCrashed();
 }
 
 PP_Instance GetInstanceForResource(PP_Resource resource) {
-  ::ppapi::Resource* obj =
-      PpapiGlobals::Get()->GetResourceTracker()->GetResource(resource);
+  ::ppapi::Resource* obj = ResourceTracker::Get()->GetResource(resource);
   if (!obj)
     return 0;
   return obj->pp_instance();
@@ -39,8 +35,7 @@ PP_Instance GetInstanceForResource(PP_Resource resource) {
 
 void SetReserveInstanceIDCallback(PP_Module module,
                                   PP_Bool (*reserve)(PP_Module, PP_Instance)) {
-  PluginModule* plugin_module =
-      HostGlobals::Get()->host_resource_tracker()->GetModule(module);
+  PluginModule* plugin_module = ResourceTracker::Get()->GetModule(module);
   if (plugin_module)
     plugin_module->SetReserveInstanceIDCallback(reserve);
 }
@@ -53,22 +48,19 @@ int32_t GetURLLoaderBufferedBytes(PP_Resource url_loader) {
 }
 
 void AddRefModule(PP_Module module) {
-  PluginModule* plugin_module =
-      HostGlobals::Get()->host_resource_tracker()->GetModule(module);
+  PluginModule* plugin_module = ResourceTracker::Get()->GetModule(module);
   if (plugin_module)
     plugin_module->AddRef();
 }
 
 void ReleaseModule(PP_Module module) {
-  PluginModule* plugin_module =
-      HostGlobals::Get()->host_resource_tracker()->GetModule(module);
+  PluginModule* plugin_module = ResourceTracker::Get()->GetModule(module);
   if (plugin_module)
     plugin_module->Release();
 }
 
 PP_Bool IsInModuleDestructor(PP_Module module) {
-  PluginModule* plugin_module =
-      HostGlobals::Get()->host_resource_tracker()->GetModule(module);
+  PluginModule* plugin_module = ResourceTracker::Get()->GetModule(module);
   if (plugin_module)
     return PP_FromBool(plugin_module->is_in_destructor());
   return PP_FALSE;
diff --git a/webkit/plugins/ppapi/ppb_var_impl.cc b/webkit/plugins/ppapi/ppb_var_impl.cc
index 59df63d..384d449 100644
--- a/webkit/plugins/ppapi/ppb_var_impl.cc
+++ b/webkit/plugins/ppapi/ppb_var_impl.cc
@@ -11,7 +11,6 @@
 #include "ppapi/c/pp_var.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h"
 #include "webkit/plugins/ppapi/common.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/npapi_glue.h"
 #include "webkit/plugins/ppapi/npobject_var.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
@@ -21,7 +20,6 @@
 #include "v8/include/v8.h"
 
 using ppapi::NPObjectVar;
-using ppapi::PpapiGlobals;
 using ppapi::StringVar;
 using ppapi::Var;
 using WebKit::WebBindings;
@@ -126,8 +124,7 @@ class ObjectAccessorTryCatch : public TryCatch {
   NPObjectVar* object() { return object_.get(); }
 
   PluginInstance* GetPluginInstance() {
-    return HostGlobals::Get()->host_resource_tracker()->GetInstance(
-      object()->pp_instance());
+    return ResourceTracker::Get()->GetInstance(object()->pp_instance());
   }
 
  protected:
@@ -173,11 +170,11 @@ class ObjectAccessorWithIdentifierTryCatch : public ObjectAccessorTryCatch {
 // PPB_Var methods -------------------------------------------------------------
 
 void AddRefVar(PP_Var var) {
-  PpapiGlobals::Get()->GetVarTracker()->AddRefVar(var);
+  ResourceTracker::Get()->GetVarTracker()->AddRefVar(var);
 }
 
 void ReleaseVar(PP_Var var) {
-  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var);
+  ResourceTracker::Get()->GetVarTracker()->ReleaseVar(var);
 }
 
 PP_Var VarFromUtf8(PP_Module module, const char* data, uint32_t len) {
@@ -407,11 +404,10 @@ bool IsInstanceOfDeprecated(PP_Var var,
                                     ppp_class, ppp_class_data);
 }
 
-PP_Var CreateObjectDeprecated(PP_Instance pp_instance,
+PP_Var CreateObjectDeprecated(PP_Instance instance_id,
                               const PPP_Class_Deprecated* ppp_class,
                               void* ppp_class_data) {
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance) {
     DLOG(ERROR) << "Create object passed an invalid instance.";
     return PP_MakeNull();
@@ -419,11 +415,10 @@ PP_Var CreateObjectDeprecated(PP_Instance pp_instance,
   return PluginObject::Create(instance, ppp_class, ppp_class_data);
 }
 
-PP_Var CreateObjectWithModuleDeprecated(PP_Module pp_module,
+PP_Var CreateObjectWithModuleDeprecated(PP_Module module_id,
                                         const PPP_Class_Deprecated* ppp_class,
                                         void* ppp_class_data) {
-  PluginModule* module =
-      HostGlobals::Get()->host_resource_tracker()->GetModule(pp_module);
+  PluginModule* module = ResourceTracker::Get()->GetModule(module_id);
   if (!module)
     return PP_MakeNull();
   return PluginObject::Create(module->GetSomeInstance(),
diff --git a/webkit/plugins/ppapi/ppb_video_capture_impl.cc b/webkit/plugins/ppapi/ppb_video_capture_impl.cc
index 466125c..de97914 100644
--- a/webkit/plugins/ppapi/ppb_video_capture_impl.cc
+++ b/webkit/plugins/ppapi/ppb_video_capture_impl.cc
@@ -12,7 +12,6 @@
 #include "ppapi/c/dev/ppb_video_capture_dev.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/thunk/enter.h"
 #include "webkit/plugins/ppapi/common.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
@@ -21,7 +20,6 @@
 #include "webkit/plugins/ppapi/resource_helper.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
 
-using ppapi::PpapiGlobals;
 using ppapi::thunk::EnterResourceNoLock;
 using ppapi::thunk::PPB_Buffer_API;
 using ppapi::thunk::PPB_VideoCapture_API;
@@ -267,7 +265,7 @@ void PPB_VideoCapture_Impl::OnDeviceInfoReceived(
     info.buffer = static_cast<PPB_Buffer_Impl*>(enter.object());
     info.data = info.buffer->Map();
     if (!info.data) {
-      PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(resources[i]);
+      ResourceTracker::Get()->ReleaseResource(resources[i]);
       break;
     }
     buffers_.push_back(info);
@@ -288,7 +286,7 @@ void PPB_VideoCapture_Impl::OnDeviceInfoReceived(
 
 void PPB_VideoCapture_Impl::ReleaseBuffers() {
   DCHECK(!is_dead_);
-  ::ppapi::ResourceTracker* tracker = PpapiGlobals::Get()->GetResourceTracker();
+  ResourceTracker *tracker = ResourceTracker::Get();
   for (size_t i = 0; i < buffers_.size(); ++i) {
     buffers_[i].buffer->Unmap();
     tracker->ReleaseResource(buffers_[i].buffer->pp_resource());
diff --git a/webkit/plugins/ppapi/quota_file_io.cc b/webkit/plugins/ppapi/quota_file_io.cc
index 37e58c0..73b20ca 100644
--- a/webkit/plugins/ppapi/quota_file_io.cc
+++ b/webkit/plugins/ppapi/quota_file_io.cc
@@ -12,7 +12,6 @@
 #include "base/message_loop_proxy.h"
 #include "base/stl_util.h"
 #include "base/task.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/resource_helper.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
@@ -271,8 +270,7 @@ bool QuotaFileIO::WillSetLength(int64_t length,
 }
 
 PluginDelegate* QuotaFileIO::GetPluginDelegate() const {
-  PluginInstance* instance =
-      HostGlobals::Get()->host_resource_tracker()->GetInstance(pp_instance_);
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance_);
   if (instance)
     return instance->delegate();
   return NULL;
diff --git a/webkit/plugins/ppapi/resource_helper.cc b/webkit/plugins/ppapi/resource_helper.cc
index cdea783..27f303d 100644
--- a/webkit/plugins/ppapi/resource_helper.cc
+++ b/webkit/plugins/ppapi/resource_helper.cc
@@ -6,7 +6,6 @@
 
 #include "base/logging.h"
 #include "ppapi/shared_impl/resource.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
@@ -18,7 +17,7 @@ namespace ppapi {
 // static
 PluginInstance* ResourceHelper::GetPluginInstance(
     const ::ppapi::Resource* resource) {
-  ResourceTracker* tracker = HostGlobals::Get()->host_resource_tracker();
+  ResourceTracker* tracker = ResourceTracker::Get();
   return tracker->GetInstance(resource->pp_instance());
 }
 
diff --git a/webkit/plugins/ppapi/resource_tracker.cc b/webkit/plugins/ppapi/resource_tracker.cc
index 0743723..6b0de7d 100644
--- a/webkit/plugins/ppapi/resource_tracker.cc
+++ b/webkit/plugins/ppapi/resource_tracker.cc
@@ -15,7 +15,6 @@
 #include "ppapi/shared_impl/id_assignment.h"
 #include "ppapi/shared_impl/tracker_base.h"
 #include "webkit/plugins/ppapi/callbacks.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/npobject_var.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
@@ -37,7 +36,7 @@ namespace ppapi {
 namespace {
 
 ::ppapi::TrackerBase* GetTrackerBase() {
-  return HostGlobals::Get()->host_resource_tracker();
+  return ResourceTracker::Get();
 }
 
 }  // namespace
@@ -62,6 +61,10 @@ struct ResourceTracker::InstanceData {
       function_proxies[::ppapi::proxy::INTERFACE_ID_COUNT];
 };
 
+// static
+ResourceTracker* ResourceTracker::global_tracker_ = NULL;
+ResourceTracker* ResourceTracker::singleton_override_ = NULL;
+
 ResourceTracker::ResourceTracker() {
   // Wire up the new shared resource tracker base to use our implementation.
   ::ppapi::TrackerBase::Init(&GetTrackerBase);
@@ -70,6 +73,15 @@ ResourceTracker::ResourceTracker() {
 ResourceTracker::~ResourceTracker() {
 }
 
+// static
+ResourceTracker* ResourceTracker::Get() {
+  if (singleton_override_)
+    return singleton_override_;
+  if (!global_tracker_)
+    global_tracker_ = new ResourceTracker;
+  return global_tracker_;
+}
+
 void ResourceTracker::CleanupInstanceData(PP_Instance instance,
                                           bool delete_instance) {
   DLOG_IF(ERROR, !CheckIdType(instance, ::ppapi::PP_ID_TYPE_INSTANCE))
@@ -142,6 +154,14 @@ void ResourceTracker::CleanupInstanceData(PP_Instance instance,
   return proxy.get();
 }
 
+::ppapi::VarTracker* ResourceTracker::GetVarTracker() {
+  return &var_tracker_;
+}
+
+::ppapi::ResourceTracker* ResourceTracker::GetResourceTracker() {
+  return this;
+}
+
 PP_Module ResourceTracker::GetModuleForInstance(PP_Instance instance) {
   PluginInstance* inst = GetInstance(instance);
   if (!inst)
@@ -289,5 +309,17 @@ PluginModule* ResourceTracker::GetModule(PP_Module module) {
   return found->second;
 }
 
+// static
+void ResourceTracker::SetSingletonOverride(ResourceTracker* tracker) {
+  DCHECK(!singleton_override_);
+  singleton_override_ = tracker;
+}
+
+// static
+void ResourceTracker::ClearSingletonOverride() {
+  DCHECK(singleton_override_);
+  singleton_override_ = NULL;
+}
+
 }  // namespace ppapi
 }  // namespace webkit
diff --git a/webkit/plugins/ppapi/resource_tracker.h b/webkit/plugins/ppapi/resource_tracker.h
index 221a8f9..79de8be 100644
--- a/webkit/plugins/ppapi/resource_tracker.h
+++ b/webkit/plugins/ppapi/resource_tracker.h
@@ -45,8 +45,8 @@ class ResourceTrackerTest;
 class ResourceTracker : public ::ppapi::TrackerBase,
                         public ::ppapi::ResourceTracker {
  public:
-  ResourceTracker();
-  virtual ~ResourceTracker();
+  // Returns the pointer to the singleton object.
+  static ResourceTracker* Get();
 
   // PP_Resources --------------------------------------------------------------
 
@@ -54,6 +54,8 @@ class ResourceTracker : public ::ppapi::TrackerBase,
   virtual ::ppapi::FunctionGroupBase* GetFunctionAPI(
       PP_Instance pp_instance,
       ::ppapi::proxy::InterfaceID id) OVERRIDE;
+  virtual ::ppapi::VarTracker* GetVarTracker() OVERRIDE;
+  virtual ::ppapi::ResourceTracker* GetResourceTracker() OVERRIDE;
   virtual PP_Module GetModuleForInstance(PP_Instance instance) OVERRIDE;
 
   // ppapi::ResourceTracker overrides.
@@ -117,11 +119,46 @@ class ResourceTracker : public ::ppapi::TrackerBase,
   // Per-instance data we track.
   struct InstanceData;
 
+  // Prohibit creation other then by the Singleton class.
+  ResourceTracker();
+  virtual ~ResourceTracker();
+
   // Force frees all vars and resources associated with the given instance.
   // If delete_instance is true, the instance tracking information will also
   // be deleted.
   void CleanupInstanceData(PP_Instance instance, bool delete_instance);
 
+  // Overrides the singleton object. This is used for tests which want to
+  // specify their own tracker (otherwise, you can get cross-talk between
+  // tests since the data will live into the subsequent tests).
+  static void SetSingletonOverride(ResourceTracker* tracker);
+  static void ClearSingletonOverride();
+
+  // The lazy-initialized global instance of this object. This is created in
+  // ::Get() if there is no singleton_override_ specified.
+  //
+  // It would be nice to use LazyInstance for this since it manages the
+  // creation properly, and also cleans up on shutdown. However, the shutdown
+  // cleanup causes problems in some cases.
+  //
+  // For example, say the browser crashes or is killed. The renderer then
+  // decides to exit. Normally resources are bound to an instance and are
+  // cleaned up when WebKit deletes the instance (when you go to a different
+  // page or close that view). In this case, WebKit doesn't clean up. If the
+  // ResourceTracker was cleaned up by the AtExitManager (which would be the
+  // case with LazyInstance/Singleton) then we'd try to call up to the renderer
+  // layer via the delegate, which may be in a random state of shutdown.
+  //
+  // So effectively our rule is: any resources still around at shutdown are
+  // associated with leaked plugins in WebKit, so it's also OK to leak those
+  // resources from here (avoiding the shutdown race).
+  static ResourceTracker* global_tracker_;
+
+  // See SetSingletonOverride above.
+  static ResourceTracker* singleton_override_;
+
+  ::ppapi::VarTracker var_tracker_;
+
   // Like ResourceAndRefCount but for vars, which are associated with modules.
   typedef std::pair<scoped_refptr< ::ppapi::Var>, size_t> VarAndRefCount;
   typedef base::hash_map<int32, VarAndRefCount> VarMap;
diff --git a/webkit/plugins/ppapi/resource_tracker_unittest.cc b/webkit/plugins/ppapi/resource_tracker_unittest.cc
index 68a4b2f..0b418bb 100644
--- a/webkit/plugins/ppapi/resource_tracker_unittest.cc
+++ b/webkit/plugins/ppapi/resource_tracker_unittest.cc
@@ -9,7 +9,6 @@
 #include "ppapi/c/ppp_instance.h"
 #include "third_party/npapi/bindings/npruntime.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h"
-#include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/mock_plugin_delegate.h"
 #include "webkit/plugins/ppapi/mock_resource.h"
 #include "webkit/plugins/ppapi/npapi_glue.h"
@@ -79,9 +78,23 @@ class ResourceTrackerTest : public PpapiUnittest {
   ResourceTrackerTest() {
   }
 
-  ResourceTracker& tracker() {
-    return *HostGlobals::Get()->host_resource_tracker();
+  virtual void SetUp() {
+    // The singleton override must be installed before the generic setup because
+    // that creates an instance, etc. which uses the tracker.
+    ResourceTracker::SetSingletonOverride(&tracker_);
+    PpapiUnittest::SetUp();
   }
+  virtual void TearDown() {
+    // Must do normal tear down before clearing the override for the same rason
+    // as the SetUp.
+    PpapiUnittest::TearDown();
+    ResourceTracker::ClearSingletonOverride();
+  }
+
+  ResourceTracker& tracker() { return tracker_; }
+
+ private:
+  ResourceTracker tracker_;
 };
 
 TEST_F(ResourceTrackerTest, DeleteObjectVarWithInstance) {
@@ -125,8 +138,7 @@ TEST_F(ResourceTrackerTest, ReuseVar) {
   }
 
   // Remove both of the refs we made above.
-  ::ppapi::VarTracker* var_tracker =
-      ::ppapi::PpapiGlobals::Get()->GetVarTracker();
+  ::ppapi::VarTracker* var_tracker = tracker().GetVarTracker();
   var_tracker->ReleaseVar(static_cast<int32_t>(pp_object2.value.as_id));
   var_tracker->ReleaseVar(static_cast<int32_t>(pp_object1.value.as_id));