android webview: allow cc to fail hardware draw

content/renderer/android/synchronous_compositor_output_surface.h

 // Copyright 2013 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_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 94 matching lines @@
   bool registered_;
 
   // Not owned.
   SynchronousCompositorOutputSurfaceClient* sync_client_;
 
   gfx::Transform cached_hw_transform_;
   gfx::Rect cached_hw_viewport_;
   gfx::Rect cached_hw_clip_;
   gfx::Rect cached_hw_viewport_rect_for_tile_priority_;
   gfx::Transform cached_hw_transform_for_tile_priority_;
+  bool next_hardware_draw_needs_damage_;
 
   // Only valid (non-NULL) during a DemandDrawSw() call.
   SkCanvas* current_sw_canvas_;
 
   cc::ManagedMemoryPolicy memory_policy_;
 
   scoped_ptr<cc::CompositorFrame> frame_holder_;
 
   scoped_refptr<FrameSwapMessageQueue> frame_swap_message_queue_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorOutputSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_