cc: Emulate BeginFrame in OutputSurfaces that don't support it natively

cc/trees/layer_tree_host_impl.h

 // Copyright 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 CC_TREES_LAYER_TREE_HOST_IMPL_H_
 #define CC_TREES_LAYER_TREE_HOST_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 36 matching lines @@
 struct RendererCapabilities;
 
 // LayerTreeHost->Proxy callback interface.
 class LayerTreeHostImplClient {
  public:
   virtual void DidTryInitializeRendererOnImplThread(
       bool success,
       scoped_refptr<ContextProvider> offscreen_context_provider) = 0;
   virtual void DidLoseOutputSurfaceOnImplThread() = 0;
   virtual void OnSwapBuffersCompleteOnImplThread() = 0;
-  virtual void OnVSyncParametersChanged(base::TimeTicks timebase,
-                                        base::TimeDelta interval) = 0;
   virtual void BeginFrameOnImplThread(base::TimeTicks frame_time) = 0;
   virtual void OnCanDrawStateChanged(bool can_draw) = 0;
   virtual void OnHasPendingTreeStateChanged(bool has_pending_tree) = 0;
   virtual void SetNeedsRedrawOnImplThread() = 0;
   virtual void SetNeedsRedrawRectOnImplThread(gfx::Rect damage_rect) = 0;
   virtual void DidInitializeVisibleTileOnImplThread() = 0;
   virtual void SetNeedsCommitOnImplThread() = 0;
   virtual void PostAnimationEventsToMainThreadOnImplThread(
       scoped_ptr<AnimationEventsVector> events,
       base::Time wall_clock_time) = 0;
@@ skipping 107 matching lines @@
   // Returns the currently visible viewport size in DIP. This value excludes
   // the URL bar and non-overlay scrollbars.
   gfx::SizeF VisibleViewportSize() const;
 
   // RendererClient implementation
   virtual gfx::Rect DeviceViewport() const OVERRIDE;
  private:
   virtual float DeviceScaleFactor() const OVERRIDE;
   virtual const LayerTreeSettings& Settings() const OVERRIDE;
  public:
-  virtual void DidLoseOutputSurface() OVERRIDE;
-  virtual void OnSwapBuffersComplete(const CompositorFrameAck* ack) OVERRIDE;
   virtual void SetFullRootLayerDamage() OVERRIDE;
   virtual void SetManagedMemoryPolicy(const ManagedMemoryPolicy& policy)
       OVERRIDE;
   virtual void EnforceManagedMemoryPolicy(const ManagedMemoryPolicy& policy)
       OVERRIDE;
   virtual bool HasImplThread() const OVERRIDE;
   virtual bool ShouldClearRootRenderPass() const OVERRIDE;
   virtual CompositorFrameMetadata MakeCompositorFrameMetadata() const OVERRIDE;
   virtual bool AllowPartialSwap() const OVERRIDE;
 
   // TileManagerClient implementation.
   virtual void DidInitializeVisibleTile() OVERRIDE;
   virtual bool ShouldForceTileUploadsRequiredForActivationToComplete() const
       OVERRIDE;
 
   // OutputSurfaceClient implementation.
   virtual bool DeferredInitialize(
       scoped_refptr<ContextProvider> offscreen_context_provider) OVERRIDE;
   virtual void SetNeedsRedrawRect(gfx::Rect rect) OVERRIDE;
-  virtual void OnVSyncParametersChanged(base::TimeTicks timebase,
-                                        base::TimeDelta interval) OVERRIDE;
   virtual void BeginFrame(base::TimeTicks frame_time)
       OVERRIDE;
   virtual void SetExternalDrawConstraints(const gfx::Transform& transform,
                                           gfx::Rect viewport) OVERRIDE;
+  virtual void DidLoseOutputSurface() OVERRIDE;
+  virtual void OnSwapBuffersComplete(const CompositorFrameAck* ack) OVERRIDE;
 
   // Called from LayerTreeImpl.
   void OnCanDrawStateChangedForTree();
 
   // Implementation
   bool CanDraw();
   OutputSurface* output_surface() const { return output_surface_.get(); }
 
   std::string LayerTreeAsText() const;
   std::string LayerTreeAsJson() const;
@@ skipping 308 matching lines @@
   scoped_ptr<AnimationRegistrar> animation_registrar_;
 
   RenderingStatsInstrumentation* rendering_stats_instrumentation_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_