cc: Add OutputSurface state snapshots.

cc/output/direct_renderer.h

 // Copyright 2012 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_DIRECT_RENDERER_H_
 #define CC_OUTPUT_DIRECT_RENDERER_H_
 
 #include <memory>
 #include <unordered_map>
 
@@ skipping 44 matching lines @@
   void DrawFrame(RenderPassList* render_passes_in_draw_order,
                  float device_scale_factor,
                  const gfx::ColorSpace& device_color_space,
                  const gfx::Size& device_viewport_size);
 
   // Public interface implemented by subclasses.
   virtual void SwapBuffers(std::vector<ui::LatencyInfo> latency_info) = 0;
   virtual void SwapBuffersComplete() {}
   virtual void DidReceiveTextureInUseResponses(
       const gpu::TextureInUseResponses& responses) {}
+  virtual void ReadbackSwappedOverlayTextures(
+      std::vector<SkBitmap>* bitmaps,
+      const base::Callback<void(bool)>& callback);
 
   // Allow tests to enlarge the texture size of non-root render passes to
   // verify cases where the texture doesn't match the render pass size.
   void SetEnlargePassTextureAmountForTesting(const gfx::Size& amount) {
     enlarge_pass_texture_amount_ = amount;
   }
 
   // Public for tests that poke at internals.
   struct CC_EXPORT DrawingFrame {
     DrawingFrame();
@@ skipping 139 matching lines @@
   float reshape_device_scale_factor_ = 0.f;
   gfx::ColorSpace reshape_device_color_space_;
   bool reshape_has_alpha_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(DirectRenderer);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_DIRECT_RENDERER_H_