Support error handling for Surface readbacks

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 <set>
 #include <string>
@@ skipping 171 matching lines @@
   void Destroy() override;
   void SetTooltipText(const base::string16& tooltip_text) override;
   void SelectionChanged(const base::string16& text,
                         size_t offset,
                         const gfx::Range& range) override;
   gfx::Size GetRequestedRendererSize() const override;
   void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) override;
   void CopyFromCompositingSurface(const gfx::Rect& src_subrect,
                                   const gfx::Size& dst_size,
-                                  CopyFromCompositingSurfaceCallback& callback,
+                                  ReadbackRequestCallback& callback,
                                   const SkColorType color_type) override;
   void CopyFromCompositingSurfaceToVideoFrame(
       const gfx::Rect& src_subrect,
       const scoped_refptr<media::VideoFrame>& target,
       const base::Callback<void(bool)>& callback) override;
   bool CanCopyToVideoFrame() const override;
   bool CanSubscribeFrame() const override;
   void BeginFrameSubscription(
       scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber) override;
   void EndFrameSubscription() override;
@@ skipping 118 matching lines @@
 #if defined(OS_WIN)
   // Sets the cutout rects from constrained windows. These are rectangles that
   // windowed NPAPI plugins shouldn't paint in. Overwrites any previous cutout
   // rects.
   void UpdateConstrainedWindowRects(const std::vector<gfx::Rect>& rects);
 
   // Updates the cursor clip region. Used for mouse locking.
   void UpdateMouseLockRegion();
 #endif
 
-  void DisambiguationPopupRendered(bool success, const SkBitmap& result);
+  void DisambiguationPopupRendered(const SkBitmap& result,
+                                   ReadbackResponse response);
 
   void HideDisambiguationPopup();
 
   void ProcessDisambiguationGesture(ui::GestureEvent* event);
 
   void ProcessDisambiguationMouse(ui::MouseEvent* event);
 
   // Method to indicate if this instance is shutting down or closing.
   // TODO(shrikant): Discuss around to see if it makes sense to add this method
   // as part of RenderWidgetHostView.
@@ skipping 281 matching lines @@
   // view, so we can ensure the window hasn't moved between copying from the
   // compositing surface and showing the disambiguation popup.
   gfx::Vector2dF disambiguation_scroll_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_