aw: Block child compositor if frame is not consumed by parent

android_webview/browser/hardware_renderer.h

 // Copyright 2014 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 ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_
 #define ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_
 
 #include "android_webview/browser/parent_compositor_draw_constraints.h"
 #include "android_webview/browser/shared_renderer_state.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 44 matching lines @@
   virtual void DidCompleteSwapBuffers() OVERRIDE {}
 
   // cc::LayerTreeHostSingleThreadClient overrides.
   virtual void DidPostSwapBuffers() OVERRIDE {}
   virtual void DidAbortSwapBuffers() OVERRIDE {}
 
   // cc::DelegatedFrameResourceCollectionClient overrides.
   virtual void UnusedResourcesAreAvailable() OVERRIDE;
 
  private:
+  void SetFrameData();
+
   SharedRendererState* shared_renderer_state_;
 
   typedef void* EGLContext;
   EGLContext last_egl_context_;
 
+  scoped_ptr<DrawGLInput> committed_input_;
+
   // Information about last delegated frame.
   gfx::Size frame_size_;
   gfx::Vector2d scroll_offset_;
 
   // Information from draw.
   gfx::Size viewport_;
   gfx::Rect clip_;
   bool stencil_enabled_;
   bool viewport_clip_valid_for_dcheck_;
 
@@ skipping 10 matching lines @@
   ParentOutputSurface* output_surface_;
 
   ParentCompositorDrawConstraints draw_constraints_;
 
   DISALLOW_COPY_AND_ASSIGN(HardwareRenderer);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_