Make the Pepper proxy support in-process font rendering.

This implements a WebKit thread in the PPAPI plugin process so we can do the
font calls without IPC. The existing font support was refactored into
a virtual class (to prevent PPAPI from depending on WebKit and creating a
circular GYP dependency).

This moves the renderer sandbox support into content/common so that it can
be used by the PPAPI process.
Review URL: http://codereview.chromium.org/6981001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@84856 0039d316-1c4b-4281-b951-d872f2087c98

6 files changed, 422 insertions, 0 deletions

diff --git a/content/ppapi_plugin/ppapi_thread.cc b/content/ppapi_plugin/ppapi_thread.cc
index 91c3f85..73c0d5f 100644
--- a/content/ppapi_plugin/ppapi_thread.cc
+++ b/content/ppapi_plugin/ppapi_thread.cc
@@ -12,11 +12,13 @@
 #include "content/common/child_process.h"
 #include "content/ppapi_plugin/broker_process_dispatcher.h"
 #include "content/ppapi_plugin/plugin_process_dispatcher.h"
+#include "content/ppapi_plugin/ppapi_webkit_thread.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_sync_channel.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppp.h"
 #include "ppapi/proxy/ppapi_messages.h"
+#include "webkit/plugins/ppapi/webkit_forwarding_impl.h"
 
 #if defined(OS_WIN)
 #include "sandbox/src/sandbox.h"
@@ -81,6 +83,19 @@ std::set<PP_Instance>* PpapiThread::GetGloballySeenInstanceIDSet() {
   return &globally_seen_instance_ids_;
 }
 
+pp::shared_impl::WebKitForwarding* PpapiThread::GetWebKitForwarding() {
+  if (!webkit_forwarding_.get())
+    webkit_forwarding_.reset(new webkit::ppapi::WebKitForwardingImpl);
+  return webkit_forwarding_.get();
+}
+
+void PpapiThread::PostToWebKitThread(const tracked_objects::Location& from_here,
+                                     const base::Closure& task) {
+  if (!webkit_thread_.get())
+    webkit_thread_.reset(new PpapiWebKitThread);
+  webkit_thread_->PostTask(from_here, task);
+}
+
 void PpapiThread::OnMsgLoadPlugin(const FilePath& path) {
   base::ScopedNativeLibrary library(base::LoadNativeLibrary(path, NULL));
 
diff --git a/content/ppapi_plugin/ppapi_thread.h b/content/ppapi_plugin/ppapi_thread.h
index 50bda11..5b7e3c4 100644
--- a/content/ppapi_plugin/ppapi_thread.h
+++ b/content/ppapi_plugin/ppapi_thread.h
@@ -17,6 +17,7 @@
 #include "ppapi/c/trusted/ppp_broker.h"
 
 class FilePath;
+class PpapiWebKitThread;
 
 namespace IPC {
 struct ChannelHandle;
@@ -36,6 +37,9 @@ class PpapiThread : public ChildThread,
   virtual base::MessageLoopProxy* GetIPCMessageLoop();
   virtual base::WaitableEvent* GetShutdownEvent();
   virtual std::set<PP_Instance>* GetGloballySeenInstanceIDSet();
+  virtual pp::shared_impl::WebKitForwarding* GetWebKitForwarding();
+  virtual void PostToWebKitThread(const tracked_objects::Location& from_here,
+                                  const base::Closure& task);
 
   // Message handlers.
   void OnMsgLoadPlugin(const FilePath& path);
@@ -70,6 +74,11 @@ class PpapiThread : public ChildThread,
   // See Dispatcher::Delegate::GetGloballySeenInstanceIDSet.
   std::set<PP_Instance> globally_seen_instance_ids_;
 
+  // Lazily created by GetWebKitForwarding.
+  scoped_ptr<pp::shared_impl::WebKitForwarding> webkit_forwarding_;
+
+  scoped_ptr<PpapiWebKitThread> webkit_thread_;
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(PpapiThread);
 };
 
diff --git a/content/ppapi_plugin/ppapi_webkit_thread.cc b/content/ppapi_plugin/ppapi_webkit_thread.cc
new file mode 100644
index 0000000..1320138
--- /dev/null
+++ b/content/ppapi_plugin/ppapi_webkit_thread.cc
@@ -0,0 +1,44 @@
+// 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 "content/ppapi_plugin/ppapi_webkit_thread.h"
+
+#include "base/logging.h"
+#include "content/ppapi_plugin/ppapi_webkitclient_impl.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
+
+PpapiWebKitThread::PpapiWebKitThread() {
+  DCHECK(!webkit_thread_.get());
+
+  webkit_thread_.reset(new InternalWebKitThread);
+  bool started = webkit_thread_->Start();
+  DCHECK(started);
+}
+
+PpapiWebKitThread::~PpapiWebKitThread() {
+}
+
+void PpapiWebKitThread::PostTask(const tracked_objects::Location& from_here,
+                                 const base::Closure& task) {
+  webkit_thread_->message_loop()->PostTask(from_here, task);
+}
+
+PpapiWebKitThread::InternalWebKitThread::InternalWebKitThread()
+    : base::Thread("PPAPIWebKit") {
+}
+
+PpapiWebKitThread::InternalWebKitThread::~InternalWebKitThread() {
+  Stop();
+}
+
+void PpapiWebKitThread::InternalWebKitThread::Init() {
+  DCHECK(!webkit_client_.get());
+  webkit_client_.reset(new PpapiWebKitClientImpl);
+  WebKit::initialize(webkit_client_.get());
+}
+
+void PpapiWebKitThread::InternalWebKitThread::CleanUp() {
+  DCHECK(webkit_client_.get());
+  WebKit::shutdown();
+}
diff --git a/content/ppapi_plugin/ppapi_webkit_thread.h b/content/ppapi_plugin/ppapi_webkit_thread.h
new file mode 100644
index 0000000..a6f338e
--- /dev/null
+++ b/content/ppapi_plugin/ppapi_webkit_thread.h
@@ -0,0 +1,50 @@
+// 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 CONTENT_PPAPI_PLUGIN_PPAPI_WEBKIT_THREAD_H_
+#define CONTENT_PPAPI_PLUGIN_PPAPI_WEBKIT_THREAD_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/threading/thread.h"
+
+class PpapiWebKitClientImpl;
+
+// This creates a WebKit main thread on instantiation on construction and kills
+// it on deletion. See also content/browser/in_process_webkit for the
+// corresponding concept in the browser process.
+class PpapiWebKitThread {
+ public:
+  PpapiWebKitThread();
+  ~PpapiWebKitThread();
+
+  // Posts the given task to the thread, see MessageLoop::PostTask.
+  void PostTask(
+      const tracked_objects::Location& from_here,
+      const base::Closure& task);
+
+ private:
+  // Must be private so that we can carefully control its lifetime.
+  class InternalWebKitThread : public base::Thread {
+   public:
+    InternalWebKitThread();
+    virtual ~InternalWebKitThread();
+    // Does the actual initialization and shutdown of WebKit.  Called at the
+    // beginning and end of the thread's lifetime.
+    virtual void Init();
+    virtual void CleanUp();
+
+   private:
+    // The WebKitClient implementation.  Only access on WebKit thread.
+    scoped_ptr<PpapiWebKitClientImpl> webkit_client_;
+  };
+
+  // Pointer to the actual WebKitThread.
+  scoped_ptr<InternalWebKitThread> webkit_thread_;
+
+  DISALLOW_COPY_AND_ASSIGN(PpapiWebKitThread);
+};
+
+#endif  // CONTENT_PPAPI_PLUGIN_PPAPI_WEBKIT_THREAD_H_
diff --git a/content/ppapi_plugin/ppapi_webkitclient_impl.cc b/content/ppapi_plugin/ppapi_webkitclient_impl.cc
new file mode 100644
index 0000000..1abbe94
--- /dev/null
+++ b/content/ppapi_plugin/ppapi_webkitclient_impl.cc
@@ -0,0 +1,238 @@
+// 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 "content/ppapi_plugin/ppapi_webkitclient_impl.h"
+
+#include <map>
+
+#include "base/synchronization/lock.h"
+#include "base/logging.h"
+#include "base/string16.h"
+#include "build/build_config.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebSerializedScriptValue.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
+
+#if defined(OS_WIN)
+#include "third_party/WebKit/Source/WebKit/chromium/public/win/WebSandboxSupport.h"
+#elif defined(OS_MACOSX)
+#include "third_party/WebKit/Source/WebKit/chromium/public/mac/WebSandboxSupport.h"
+#elif defined(OS_LINUX)
+#include "content/common/child_process_sandbox_support_linux.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/linux/WebSandboxSupport.h"
+#endif
+
+using WebKit::WebSandboxSupport;
+using WebKit::WebString;
+using WebKit::WebUChar;
+
+class PpapiWebKitClientImpl::SandboxSupport : public WebSandboxSupport {
+ public:
+#if defined(OS_WIN)
+  virtual bool ensureFontLoaded(HFONT);
+#elif defined(OS_MACOSX)
+  virtual bool loadFont(NSFont* srcFont, ATSFontContainerRef* out);
+#elif defined(OS_LINUX)
+  virtual WebString getFontFamilyForCharacters(
+      const WebUChar* characters,
+      size_t numCharacters,
+      const char* preferred_locale);
+  virtual void getRenderStyleForStrike(
+      const char* family, int sizeAndStyle, WebKit::WebFontRenderStyle* out);
+
+ private:
+  // WebKit likes to ask us for the correct font family to use for a set of
+  // unicode code points. It needs this information frequently so we cache it
+  // here. The key in this map is an array of 16-bit UTF16 values from WebKit.
+  // The value is a string containing the correct font family.
+  base::Lock unicode_font_families_mutex_;
+  std::map<string16, std::string> unicode_font_families_;
+#endif
+};
+
+#if defined(OS_WIN)
+
+bool PpapiWebKitClientImpl::SandboxSupport::ensureFontLoaded(HFONT font) {
+  // TODO(brettw) this should do the something similar to what
+  // RendererWebKitClientImpl does and request that the browser load the font.
+  NOTIMPLEMENTED();
+  return false;
+}
+
+#elif defined(OS_MACOSX)
+
+bool PpapiWebKitClientImpl::SandboxSupport::loadFont(NSFont* srcFont,
+    ATSFontContainerRef* out) {
+  // TODO(brettw) this should do the something similar to what
+  // RendererWebKitClientImpl does and request that the browser load the font.
+  NOTIMPLEMENTED();
+  return false;
+}
+
+#elif defined(OS_LINUX)
+
+WebString PpapiWebKitClientImpl::SandboxSupport::getFontFamilyForCharacters(
+    const WebUChar* characters,
+    size_t num_characters,
+    const char* preferred_locale) {
+  base::AutoLock lock(unicode_font_families_mutex_);
+  const string16 key(characters, num_characters);
+  const std::map<string16, std::string>::const_iterator iter =
+      unicode_font_families_.find(key);
+  if (iter != unicode_font_families_.end())
+    return WebString::fromUTF8(iter->second);
+
+  const std::string family_name =
+      child_process_sandbox_support::getFontFamilyForCharacters(
+          characters,
+          num_characters,
+          preferred_locale);
+  unicode_font_families_.insert(make_pair(key, family_name));
+  return WebString::fromUTF8(family_name);
+}
+
+void PpapiWebKitClientImpl::SandboxSupport::getRenderStyleForStrike(
+    const char* family, int sizeAndStyle, WebKit::WebFontRenderStyle* out) {
+  child_process_sandbox_support::getRenderStyleForStrike(family, sizeAndStyle,
+                                                         out);
+}
+
+#endif
+
+PpapiWebKitClientImpl::PpapiWebKitClientImpl() {
+}
+
+PpapiWebKitClientImpl::~PpapiWebKitClientImpl() {
+}
+
+WebKit::WebClipboard* PpapiWebKitClientImpl::clipboard() {
+  NOTREACHED();
+  return NULL;
+}
+
+WebKit::WebMimeRegistry* PpapiWebKitClientImpl::mimeRegistry() {
+  NOTREACHED();
+  return NULL;
+}
+
+WebKit::WebFileUtilities* PpapiWebKitClientImpl::fileUtilities() {
+  NOTREACHED();
+  return NULL;
+}
+
+WebKit::WebSandboxSupport* PpapiWebKitClientImpl::sandboxSupport() {
+  return sandbox_support_.get();
+}
+
+bool PpapiWebKitClientImpl::sandboxEnabled() {
+  return true;  // Assume PPAPI is always sandboxed.
+}
+
+unsigned long long PpapiWebKitClientImpl::visitedLinkHash(
+    const char* canonical_url,
+    size_t length) {
+  NOTREACHED();
+  return 0;
+}
+
+bool PpapiWebKitClientImpl::isLinkVisited(unsigned long long link_hash) {
+  NOTREACHED();
+  return false;
+}
+
+WebKit::WebMessagePortChannel*
+PpapiWebKitClientImpl::createMessagePortChannel() {
+  NOTREACHED();
+  return NULL;
+}
+
+void PpapiWebKitClientImpl::setCookies(
+    const WebKit::WebURL& url,
+    const WebKit::WebURL& first_party_for_cookies,
+    const WebKit::WebString& value) {
+  NOTREACHED();
+}
+
+WebKit::WebString PpapiWebKitClientImpl::cookies(
+    const WebKit::WebURL& url,
+    const WebKit::WebURL& first_party_for_cookies) {
+  NOTREACHED();
+  return WebKit::WebString();
+}
+
+void PpapiWebKitClientImpl::prefetchHostName(const WebKit::WebString&) {
+  NOTREACHED();
+}
+
+WebKit::WebString PpapiWebKitClientImpl::defaultLocale() {
+  NOTREACHED();
+  return WebKit::WebString();
+}
+
+WebKit::WebThemeEngine* PpapiWebKitClientImpl::themeEngine() {
+  NOTREACHED();
+  return NULL;
+}
+
+WebKit::WebURLLoader* PpapiWebKitClientImpl::createURLLoader() {
+  NOTREACHED();
+  return NULL;
+}
+
+WebKit::WebSocketStreamHandle*
+    PpapiWebKitClientImpl::createSocketStreamHandle() {
+  NOTREACHED();
+  return NULL;
+}
+
+void PpapiWebKitClientImpl::getPluginList(bool refresh,
+    WebKit::WebPluginListBuilder* builder) {
+  NOTREACHED();
+}
+
+WebKit::WebData PpapiWebKitClientImpl::loadResource(const char* name) {
+  NOTREACHED();
+  return WebKit::WebData();
+}
+
+WebKit::WebStorageNamespace*
+PpapiWebKitClientImpl::createLocalStorageNamespace(
+    const WebKit::WebString& path, unsigned quota) {
+  NOTREACHED();
+  return 0;
+}
+
+void PpapiWebKitClientImpl::dispatchStorageEvent(
+    const WebKit::WebString& key, const WebKit::WebString& old_value,
+    const WebKit::WebString& new_value, const WebKit::WebString& origin,
+    const WebKit::WebURL& url, bool is_local_storage) {
+  NOTREACHED();
+}
+
+WebKit::WebSharedWorkerRepository*
+PpapiWebKitClientImpl::sharedWorkerRepository() {
+  NOTREACHED();
+  return NULL;
+}
+
+int PpapiWebKitClientImpl::databaseDeleteFile(
+    const WebKit::WebString& vfs_file_name, bool sync_dir) {
+  NOTREACHED();
+  return 0;
+}
+
+void PpapiWebKitClientImpl::createIDBKeysFromSerializedValuesAndKeyPath(
+    const WebKit::WebVector<WebKit::WebSerializedScriptValue>& values,
+    const WebKit::WebString& keyPath,
+    WebKit::WebVector<WebKit::WebIDBKey>& keys) {
+  NOTREACHED();
+}
+
+WebKit::WebSerializedScriptValue
+PpapiWebKitClientImpl::injectIDBKeyIntoSerializedValue(
+    const WebKit::WebIDBKey& key,
+    const WebKit::WebSerializedScriptValue& value,
+    const WebKit::WebString& keyPath) {
+  NOTREACHED();
+  return WebKit::WebSerializedScriptValue();
+}
diff --git a/content/ppapi_plugin/ppapi_webkitclient_impl.h b/content/ppapi_plugin/ppapi_webkitclient_impl.h
new file mode 100644
index 0000000..5c3b90e
--- /dev/null
+++ b/content/ppapi_plugin/ppapi_webkitclient_impl.h
@@ -0,0 +1,66 @@
+// 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 CONTENT_PPAPI_PLUGIN_PPAPI_WEBKITCLIENT_IMPL_H_
+#define CONTENT_PPAPI_PLUGIN_PPAPI_WEBKITCLIENT_IMPL_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/scoped_ptr.h"
+#include "webkit/glue/webkitclient_impl.h"
+
+class PpapiWebKitClientImpl : public webkit_glue::WebKitClientImpl {
+ public:
+  PpapiWebKitClientImpl();
+  virtual ~PpapiWebKitClientImpl();
+
+  // WebKitClient methods:
+  virtual WebKit::WebClipboard* clipboard();
+  virtual WebKit::WebMimeRegistry* mimeRegistry();
+  virtual WebKit::WebFileUtilities* fileUtilities();
+  virtual WebKit::WebSandboxSupport* sandboxSupport();
+  virtual bool sandboxEnabled();
+  virtual unsigned long long visitedLinkHash(const char* canonicalURL,
+                                             size_t length);
+  virtual bool isLinkVisited(unsigned long long linkHash);
+  virtual WebKit::WebMessagePortChannel* createMessagePortChannel();
+  virtual void setCookies(const WebKit::WebURL& url,
+                          const WebKit::WebURL& first_party_for_cookies,
+                          const WebKit::WebString& value);
+  virtual WebKit::WebString cookies(
+      const WebKit::WebURL& url,
+      const WebKit::WebURL& first_party_for_cookies);
+  virtual void prefetchHostName(const WebKit::WebString&);
+  virtual WebKit::WebString defaultLocale();
+  virtual WebKit::WebThemeEngine* themeEngine();
+  virtual WebKit::WebURLLoader* createURLLoader();
+  virtual WebKit::WebSocketStreamHandle* createSocketStreamHandle();
+  virtual void getPluginList(bool refresh, WebKit::WebPluginListBuilder*);
+  virtual WebKit::WebData loadResource(const char* name);
+  virtual WebKit::WebStorageNamespace* createLocalStorageNamespace(
+      const WebKit::WebString& path, unsigned quota);
+  virtual void dispatchStorageEvent(const WebKit::WebString& key,
+      const WebKit::WebString& oldValue, const WebKit::WebString& newValue,
+      const WebKit::WebString& origin, const WebKit::WebURL& url,
+      bool isLocalStorage);
+  virtual WebKit::WebSharedWorkerRepository* sharedWorkerRepository();
+  virtual int databaseDeleteFile(const WebKit::WebString& vfs_file_name,
+                                 bool sync_dir);
+  virtual void createIDBKeysFromSerializedValuesAndKeyPath(
+      const WebKit::WebVector<WebKit::WebSerializedScriptValue>& values,
+      const WebKit::WebString& keyPath,
+      WebKit::WebVector<WebKit::WebIDBKey>& keys);
+  virtual WebKit::WebSerializedScriptValue injectIDBKeyIntoSerializedValue(
+      const WebKit::WebIDBKey& key,
+      const WebKit::WebSerializedScriptValue& value,
+      const WebKit::WebString& keyPath);
+
+ private:
+  class SandboxSupport;
+  scoped_ptr<SandboxSupport> sandbox_support_;
+
+  DISALLOW_COPY_AND_ASSIGN(PpapiWebKitClientImpl);
+};
+
+#endif  // CONTENT_PPAPI_PLUGIN_PPAPI_WEBKITCLIENT_IMPL_H_