aura: Allow delegated frames to be used by more than one impl layer.

content/browser/renderer_host/render_widget_host_view_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_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 
 #include <map>
 #include <queue>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/i18n/rtl.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/process/process.h"
+#include "cc/layers/delegated_frame_resource_collection.h"
 #include "cc/layers/delegated_renderer_layer_client.h"
 #include "cc/layers/texture_layer_client.h"
 #include "cc/output/begin_frame_args.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/renderer_host/image_transport_factory_android.h"
 #include "content/browser/renderer_host/ime_adapter_android.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "gpu/command_buffer/common/mailbox.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "ui/gfx/size.h"
 #include "ui/gfx/vector2d_f.h"
 
 struct ViewHostMsg_TextInputState_Params;
 
 struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
 struct GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params;
 
 namespace cc {
 class CopyOutputResult;
+class DelegatedFrameProvider;
 class DelegatedRendererLayer;
 class Layer;
 class SingleReleaseCallback;
 class TextureLayer;
 }
 
 namespace WebKit {
 class WebExternalTextureLayer;
 class WebTouchEvent;
 class WebMouseEvent;
 }
 
 namespace content {
 class ContentViewCoreImpl;
 class OverscrollGlow;
 class RenderWidgetHost;
 class RenderWidgetHostImpl;
 struct NativeWebKeyboardEvent;
 
 // -----------------------------------------------------------------------------
 // See comments in render_widget_host_view.h about this class and its members.
 // -----------------------------------------------------------------------------
 class RenderWidgetHostViewAndroid
     : public RenderWidgetHostViewBase,
       public BrowserAccessibilityDelegate,
       public cc::TextureLayerClient,
       public cc::DelegatedRendererLayerClient,
+      public cc::DelegatedFrameResourceCollectionClient,
       public ImageTransportFactoryAndroidObserver {
  public:
   RenderWidgetHostViewAndroid(RenderWidgetHostImpl* widget,
                               ContentViewCoreImpl* content_view_core);
   virtual ~RenderWidgetHostViewAndroid();
 
   // RenderWidgetHostView implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
   virtual void InitAsChild(gfx::NativeView parent_view) OVERRIDE;
   virtual void InitAsPopup(RenderWidgetHostView* parent_host_view,
@@ skipping 114 matching lines @@
   // cc::TextureLayerClient implementation.
   virtual unsigned PrepareTexture() OVERRIDE;
   virtual WebKit::WebGraphicsContext3D* Context3d() OVERRIDE;
   virtual bool PrepareTextureMailbox(
       cc::TextureMailbox* mailbox,
       scoped_ptr<cc::SingleReleaseCallback>* release_callback,
       bool use_shared_memory) OVERRIDE;
 
   // cc::DelegatedRendererLayerClient implementation.
   virtual void DidCommitFrameData() OVERRIDE;
-  virtual void UnusedResourcesAreAvailable() OVERRIDE {}
+
+  // cc::DelegatedFrameResourceCollectionClient implementation.
+  virtual void UnusedResourcesAreAvailable() OVERRIDE;
 
   // ImageTransportFactoryAndroidObserver implementation.
   virtual void OnLostResources() OVERRIDE;
 
   // Non-virtual methods
   void SetContentViewCore(ContentViewCoreImpl* content_view_core);
   SkColor GetCachedBackgroundColor() const;
   void SendKeyEvent(const NativeWebKeyboardEvent& event);
   void SendTouchEvent(const WebKit::WebTouchEvent& event);
   void SendMouseEvent(const WebKit::WebMouseEvent& event);
@@ skipping 30 matching lines @@
   void SynchronousFrameMetadata(
       const cc::CompositorFrameMetadata& frame_metadata);
 
  private:
   void BuffersSwapped(const gpu::Mailbox& mailbox,
                       uint32_t output_surface_id,
                       const base::Closure& ack_callback);
 
   void RunAckCallbacks();
 
+  void DestroyDelegatedContent();
   void SwapDelegatedFrame(uint32 output_surface_id,
                           scoped_ptr<cc::DelegatedFrameData> frame_data);
   void SendDelegatedFrameAck(uint32 output_surface_id);
 
   void UpdateContentViewCoreFrameMetadata(
       const cc::CompositorFrameMetadata& frame_metadata);
   void ComputeContentsSize(const cc::CompositorFrameMetadata& frame_metadata);
   void ResetClipping();
   void ClipContents(const gfx::Rect& clipping, const gfx::Size& content_size);
 
@@ skipping 31 matching lines @@
   ContentViewCoreImpl* content_view_core_;
 
   ImeAdapterAndroid ime_adapter_android_;
 
   // Body background color of the underlying document.
   SkColor cached_background_color_;
 
   // The texture layer for this view when using browser-side compositing.
   scoped_refptr<cc::TextureLayer> texture_layer_;
 
+  scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection_;
+  scoped_refptr<cc::DelegatedFrameProvider> frame_provider_;
   scoped_refptr<cc::DelegatedRendererLayer> delegated_renderer_layer_;
 
   // The layer used for rendering the contents of this view.
   // It is either owned by texture_layer_ or surface_texture_transport_
   // depending on the mode.
   scoped_refptr<cc::Layer> layer_;
 
   // The most recent texture id that was pushed to the texture layer.
   unsigned int texture_id_in_layer_;
 
@@ skipping 16 matching lines @@
   scoped_ptr<OverscrollGlow> overscroll_effect_;
 
   bool flush_input_requested_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_