[Android WebView] Implement Ubercomp for Render Thread support

content/browser/android/in_process/synchronous_compositor_output_surface.h

Index: content/browser/android/in_process/synchronous_compositor_output_surface.h
diff --git a/content/browser/android/in_process/synchronous_compositor_output_surface.h b/content/browser/android/in_process/synchronous_compositor_output_surface.h
index 61f546f01b775715429122f5e23a968f138d5fba..cc1f3be6cbca2b1bea29ee15a9b3a2b3be24cd4c 100644
--- a/content/browser/android/in_process/synchronous_compositor_output_surface.h
+++ b/content/browser/android/in_process/synchronous_compositor_output_surface.h
@@ -9,6 +9,7 @@
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "cc/output/compositor_frame.h"
 #include "cc/output/managed_memory_policy.h"
 #include "cc/output/output_surface.h"
 #include "content/public/browser/android/synchronous_compositor.h"
@@ -32,8 +33,6 @@ class SynchronousCompositorOutputSurfaceDelegate {
   virtual void DidDestroySynchronousOutputSurface(
       SynchronousCompositorOutputSurface* output_surface) = 0;
   virtual void SetContinuousInvalidate(bool enable) = 0;
-  virtual void UpdateFrameMetaData(
-      const cc::CompositorFrameMetadata& frame_metadata) = 0;
   virtual void DidActivatePendingTree() = 0;
 
  protected:
@@ -66,12 +65,13 @@ class SynchronousCompositorOutputSurface
   bool InitializeHwDraw(
       scoped_refptr<cc::ContextProvider> onscreen_context_provider);
   void ReleaseHwDraw();
-  bool DemandDrawHw(gfx::Size surface_size,
-                    const gfx::Transform& transform,
-                    gfx::Rect viewport,
-                    gfx::Rect clip,
-                    bool stencil_enabled);
-  bool DemandDrawSw(SkCanvas* canvas);
+  scoped_ptr<cc::CompositorFrame> DemandDrawHw(gfx::Size surface_size,
+                                               const gfx::Transform& transform,
+                                               gfx::Rect viewport,
+                                               gfx::Rect clip,
+                                               bool stencil_enabled);
+  void ReturnResources(const cc::CompositorFrameAck& frame_ack);
+  scoped_ptr<cc::CompositorFrame> DemandDrawSw(SkCanvas* canvas);
   void SetMemoryPolicy(const SynchronousCompositorMemoryPolicy& policy);
 
  private:
@@ -84,12 +84,10 @@ class SynchronousCompositorOutputSurface
                        bool valid_for_tile_management);
   bool CalledOnValidThread() const;
   SynchronousCompositorOutputSurfaceDelegate* GetDelegate();
-  void UpdateFrameMetaData(const cc::CompositorFrameMetadata& frame_info);
 
   int routing_id_;
   bool needs_begin_frame_;
   bool invoking_composite_;
-  bool did_swap_buffer_;
 
   gfx::Transform cached_hw_transform_;
   gfx::Rect cached_hw_viewport_;
@@ -101,8 +99,7 @@ class SynchronousCompositorOutputSurface
   cc::ManagedMemoryPolicy memory_policy_;
 
   cc::OutputSurfaceClient* output_surface_client_;
-
-  base::WeakPtrFactory<SynchronousCompositorOutputSurface> weak_ptr_factory_;
+  scoped_ptr<cc::CompositorFrame> frame_holder_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorOutputSurface);
 };