Android media: VideoFrame should not store so many sync points.

content/browser/renderer_host/image_transport_factory_android.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_IMAGE_TRANSPORT_FACTORY_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_IMAGE_TRANSPORT_FACTORY_ANDROID_H_
 
 #include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace gfx {
 class GLShareGroup;
 }
 
 namespace gpu {
 namespace gles2 {
 class GLES2Interface;
 }
 }
 
 namespace content {
 class GLHelper;
 class GLContextLostListener;
 
 class ImageTransportFactoryAndroidObserver {
  public:
   virtual ~ImageTransportFactoryAndroidObserver() {}
   virtual void OnLostResources() = 0;
 };
 
-class ImageTransportFactoryAndroid {
+class CONTENT_EXPORT ImageTransportFactoryAndroid {
  public:
   virtual ~ImageTransportFactoryAndroid();
 
+  // Initializes the global transport factory for unit tests.
+  static void InitializeForUnitTests(
+      ImageTransportFactoryAndroid* test_factory);
+
   static ImageTransportFactoryAndroid* GetInstance();
 
   virtual GLHelper* GetGLHelper() = 0;
   virtual uint32 GetChannelID() = 0;
 
   static void AddObserver(ImageTransportFactoryAndroidObserver* observer);
   static void RemoveObserver(ImageTransportFactoryAndroidObserver* observer);
 
 protected:
   ImageTransportFactoryAndroid();
 
   scoped_ptr<GLContextLostListener> context_lost_listener_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_IMAGE_TRANSPORT_FACTORY_ANDROID_H_