cc: Async readback.

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 "base/basictypes.h"
 #include "cc/base/cc_export.h"
 #include "cc/output/renderer.h"
@@ skipping 74 matching lines @@
   void SetScissorStateForQuad(const DrawingFrame* frame, const DrawQuad& quad);
   void SetScissorStateForQuadWithRenderPassScissor(
       const DrawingFrame* frame,
       const DrawQuad& quad,
       const gfx::RectF& render_pass_scissor,
       bool* should_skip_quad);
 
   static gfx::Size RenderPassTextureSize(const RenderPass* render_pass);
   static GLenum RenderPassTextureFormat(const RenderPass* render_pass);
 
-  void DrawRenderPass(DrawingFrame* frame, const RenderPass* render_pass);
+  void DrawRenderPass(DrawingFrame* frame,
+                      const RenderPass* render_pass);
   bool UseRenderPass(DrawingFrame* frame, const RenderPass* render_pass);
 
   virtual void BindFramebufferToOutputSurface(DrawingFrame* frame) = 0;
   virtual bool BindFramebufferToTexture(DrawingFrame* frame,
                                         const ScopedResource* resource,
                                         gfx::Rect framebuffer_rect) = 0;
   virtual void SetDrawViewportSize(gfx::Size viewport_size) = 0;
   virtual void SetScissorTestRect(gfx::Rect scissor_rect) = 0;
   virtual void ClearFramebuffer(DrawingFrame* frame) = 0;
   virtual void DoDrawQuad(DrawingFrame* frame, const DrawQuad* quad) = 0;
   virtual void BeginDrawingFrame(DrawingFrame* frame) = 0;
   virtual void FinishDrawingFrame(DrawingFrame* frame) = 0;
   virtual void FinishDrawingQuadList();
   virtual bool FlippedFramebuffer() const = 0;
   virtual void EnsureScissorTestEnabled() = 0;
   virtual void EnsureScissorTestDisabled() = 0;
+  virtual void CopyCurrentRenderPassToBitmap(DrawingFrame* frame,
+                                             SkBitmap* bitmap) = 0;
 
   ScopedPtrHashMap<RenderPass::Id, CachedResource> render_pass_textures_;
   ResourceProvider* resource_provider_;
 
  private:
   gfx::Vector2d enlarge_pass_texture_amount_;
 
   DISALLOW_COPY_AND_ASSIGN(DirectRenderer);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_DIRECT_RENDERER_H_