cc: Add OutputSurface state snapshots.

cc/output/gl_renderer.h

 // Copyright 2010 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_OUTPUT_GL_RENDERER_H_
 #define CC_OUTPUT_GL_RENDERER_H_
 
 #include <deque>
 #include <vector>
 
@@ skipping 47 matching lines @@
              TextureMailboxDeleter* texture_mailbox_deleter,
              int highp_threshold_min);
   ~GLRenderer() override;
 
   void SwapBuffers(std::vector<ui::LatencyInfo> latency_info) override;
   void SwapBuffersComplete() override;
 
   void DidReceiveTextureInUseResponses(
       const gpu::TextureInUseResponses& responses) override;
 
+  void ReadbackSwappedOverlayTextures(
+      std::vector<SkBitmap>* bitmaps,
+      const base::Callback<void(bool)>& callback) override;
+
   virtual bool IsContextLost();
 
  protected:
   void DidChangeVisibility() override;
 
   const gfx::QuadF& SharedGeometryQuad() const { return shared_geometry_quad_; }
   const StaticGeometryBinding* SharedGeometry() const {
     return shared_geometry_.get();
   }
 
@@ skipping 463 matching lines @@
   bool force_drawing_frame_framebuffer_unflipped_ = false;
 
   BoundGeometry bound_geometry_;
   ColorLUTCache color_lut_cache_;
   DISALLOW_COPY_AND_ASSIGN(GLRenderer);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_GL_RENDERER_H_