Make RenderWidgetHostViewAura::CopyFromCompositingSurface readback layer

content/browser/renderer_host/render_widget_host_view_aura.h

 // Copyright (c) 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 22 matching lines @@
 #include "ui/compositor/compositor_observer.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/rect.h"
 #include "webkit/common/cursors/webcursor.h"
 
 namespace aura {
 class WindowTracker;
 }
 
 namespace cc {
+class CopyOutputResult;
 class DelegatedFrameData;
 }
 
 namespace gfx {
 class Canvas;
 class Display;
 }
 
 namespace ui {
 class CompositorLock;
@@ skipping 373 matching lines @@
   // Called after |window_| is parented to a RootWindow.
   void AddedToRootWindow();
 
   // Called prior to removing |window_| from a RootWindow.
   void RemovingFromRootWindow();
 
   // Called after commit for the last reference to the texture going away
   // after it was released as the frontbuffer.
   void SetSurfaceNotInUseByCompositor(scoped_refptr<ui::Texture>);
 
-  // Called after async thumbnailer task completes.  Used to call
-  // AdjustSurfaceProtection.
-  static void CopyFromCompositingSurfaceFinished(
-      const SkBitmap& bitmap,
+  // Called after async thumbnailer task completes.  Scales and crops the result
+  // of the copy.
+  static void CopyFromCompositingSurfaceHasResult(
+      const gfx::Size& dst_size_in_pixel,
       const base::Callback<void(bool, const SkBitmap&)>& callback,
-      bool result);
+      scoped_ptr<cc::CopyOutputResult> result);
+  static void PrepareTextureCopyOutputResult(
+      const gfx::Size& dst_size_in_pixel,
+      const base::Callback<void(bool, const SkBitmap&)>& callback,
+      scoped_ptr<cc::CopyOutputResult> result);
+  static void PrepareBitmapCopyOutputResult(
+      const gfx::Size& dst_size_in_pixel,
+      const base::Callback<void(bool, const SkBitmap&)>& callback,
+      scoped_ptr<cc::CopyOutputResult> result);
 
   ui::Compositor* GetCompositor();
 
   // Detaches |this| from the input method object.
   void DetachFromInputMethod();
 
   // Dismisses a Web Popup on mouse press outside the popup and its parent.
   void ApplyEventFilterForPopupExit(ui::MouseEvent* event);
 
   // Converts |rect| from window coordinate to screen coordinate.
@@ skipping 221 matching lines @@
   TouchEditingClient* touch_editing_client_;
 
   ui::LatencyInfo software_latency_info_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_