Adds a printing proxy and example. This adds a printing example.

Review URL: http://codereview.chromium.org/9455083

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@124149 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 23 insertions, 3 deletions

diff --git a/ppapi/shared_impl/api_id.h b/ppapi/shared_impl/api_id.h
index f15f338..f886aab 100644
--- a/ppapi/shared_impl/api_id.h
+++ b/ppapi/shared_impl/api_id.h
@@ -58,6 +58,7 @@ enum ApiID {
   API_ID_PPP_INSTANCE_PRIVATE,
   API_ID_PPP_MESSAGING,
   API_ID_PPP_MOUSE_LOCK,
+  API_ID_PPP_PRINTING,
   API_ID_PPP_VIDEO_CAPTURE_DEV,
   API_ID_PPP_VIDEO_DECODER_DEV,
 
diff --git a/ppapi/shared_impl/resource_tracker.cc b/ppapi/shared_impl/resource_tracker.cc
index 3b66db8..a889c59 100644
--- a/ppapi/shared_impl/resource_tracker.cc
+++ b/ppapi/shared_impl/resource_tracker.cc
@@ -1,9 +1,12 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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/resource_tracker.h"
 
+#include "base/bind.h"
+#include "base/compiler_specific.h"
+#include "base/message_loop.h"
 #include "ppapi/shared_impl/callback_tracker.h"
 #include "ppapi/shared_impl/id_assignment.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
@@ -11,7 +14,9 @@
 
 namespace ppapi {
 
-ResourceTracker::ResourceTracker() : last_resource_value_(0) {
+ResourceTracker::ResourceTracker()
+    : last_resource_value_(0),
+      ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
 }
 
 ResourceTracker::~ResourceTracker() {
@@ -67,6 +72,14 @@ void ResourceTracker::ReleaseResource(PP_Resource res) {
   }
 }
 
+void ResourceTracker::ReleaseResourceSoon(PP_Resource res) {
+  MessageLoop::current()->PostNonNestableTask(
+      FROM_HERE,
+      base::Bind(&ResourceTracker::ReleaseResource,
+             weak_ptr_factory_.GetWeakPtr(),
+             res));
+}
+
 void ResourceTracker::DidCreateInstance(PP_Instance instance) {
   // Due to the infrastructure of some tests, the instance is registered
   // twice in a few cases. It would be nice not to do that and assert here
diff --git a/ppapi/shared_impl/resource_tracker.h b/ppapi/shared_impl/resource_tracker.h
index b585413..1c46bf5 100644
--- a/ppapi/shared_impl/resource_tracker.h
+++ b/ppapi/shared_impl/resource_tracker.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
@@ -10,6 +10,7 @@
 #include "base/basictypes.h"
 #include "base/hash_tables.h"
 #include "base/memory/linked_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/shared_impl/ppapi_shared_export.h"
@@ -30,6 +31,9 @@ class PPAPI_SHARED_EXPORT ResourceTracker {
   void AddRefResource(PP_Resource res);
   void ReleaseResource(PP_Resource res);
 
+  // Releases a reference on the given resource once the message loop returns.
+  void ReleaseResourceSoon(PP_Resource res);
+
   // Notifies the tracker that a new instance has been created. This must be
   // called before creating any resources associated with the instance.
   void DidCreateInstance(PP_Instance instance);
@@ -90,6 +94,8 @@ class PPAPI_SHARED_EXPORT ResourceTracker {
 
   int32 last_resource_value_;
 
+  base::WeakPtrFactory<ResourceTracker> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ResourceTracker);
 };