cc: Add CopyAsBitmapRequest class to hold the readback callback.

cc/quads/render_pass.h

 // Copyright 2011 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_QUADS_RENDER_PASS_H_
 #define CC_QUADS_RENDER_PASS_H_
 
 #include <utility>
-#include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/hash_tables.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/hash_pair.h"
 #include "cc/base/scoped_ptr_hash_map.h"
 #include "cc/base/scoped_ptr_vector.h"
 #include "skia/ext/refptr.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperations.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkImageFilter.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/rect_f.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
 
 class DrawQuad;
+class CopyOutputRequest;
 class SharedQuadState;
 
 // A list of DrawQuad objects, sorted internally in front-to-back order.
 class QuadList : public ScopedPtrVector<DrawQuad> {
  public:
   typedef reverse_iterator BackToFrontIterator;
   typedef const_reverse_iterator ConstBackToFrontIterator;
 
   inline BackToFrontIterator BackToFrontBegin() { return rbegin(); }
   inline BackToFrontIterator BackToFrontEnd() { return rend(); }
@@ skipping 57 matching lines @@
   bool has_transparent_background;
 
   // If true, then there may be pixels in the render pass' texture that are not
   // complete, since they are occluded.
   bool has_occlusion_from_outside_target_surface;
 
   // If non-empty, the renderer should produce a copy of the render pass'
   // contents as a bitmap, and give a copy of the bitmap to each callback in
   // this list. This property should not be serialized between compositors, as
   // it only makes sense in the root compositor.
-  typedef base::Callback<void(scoped_ptr<SkBitmap>)>
-      RequestCopyAsBitmapCallback;
-  std::vector<RequestCopyAsBitmapCallback> copy_callbacks;
+  ScopedPtrVector<CopyOutputRequest> copy_requests;
 
   QuadList quad_list;
   SharedQuadStateList shared_quad_state_list;
 
  protected:
   RenderPass();
 
   DISALLOW_COPY_AND_ASSIGN(RenderPass);
 };
 
@@ skipping 18 matching lines @@
 #error define a hash function for your compiler
 #endif  // COMPILER
 }
 
 namespace cc {
 typedef ScopedPtrVector<RenderPass> RenderPassList;
 typedef base::hash_map<RenderPass::Id, RenderPass*> RenderPassIdHashMap;
 }  // namespace cc
 
 #endif  // CC_QUADS_RENDER_PASS_H_