Expose locks for CopyFromCompositingSurface/CopyFromBackingStore API

content/browser/renderer_host/render_widget_host_view_android.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_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 
 #include <map>
 #include <queue>
 
@@ skipping 156 matching lines @@
   virtual void OnSwapCompositorFrame(
       uint32 output_surface_id,
       scoped_ptr<cc::CompositorFrame> frame) OVERRIDE;
   virtual void OnOverscrolled(gfx::Vector2dF accumulated_overscroll,
                               gfx::Vector2dF current_fling_velocity) OVERRIDE;
   virtual void DidStopFlinging() OVERRIDE;
   virtual void ShowDisambiguationPopup(const gfx::Rect& target_rect,
                                        const SkBitmap& zoomed_bitmap) OVERRIDE;
   virtual scoped_ptr<SyntheticGestureTarget> CreateSyntheticGestureTarget()
       OVERRIDE;
+  virtual void LockSurfaceForCopy() OVERRIDE;
+  virtual void UnlockSurfaceForCopy() OVERRIDE;
 
   // Implementation of BrowserAccessibilityDelegate:
   virtual void SetAccessibilityFocus(int acc_obj_id) OVERRIDE;
   virtual void AccessibilityDoDefaultAction(int acc_obj_id) OVERRIDE;
   virtual void AccessibilityScrollToMakeVisible(
       int acc_obj_id, gfx::Rect subfocus) OVERRIDE;
   virtual void AccessibilityScrollToPoint(
       int acc_obj_id, gfx::Point point) OVERRIDE;
   virtual void AccessibilitySetTextSelection(
       int acc_obj_id, int start_offset, int end_offset) OVERRIDE;
@@ skipping 23 matching lines @@
   void SendMouseWheelEvent(const blink::WebMouseWheelEvent& event);
   void SendGestureEvent(const blink::WebGestureEvent& event);
   void SendBeginFrame(const cc::BeginFrameArgs& args);
 
   void OnTextInputStateChanged(const ViewHostMsg_TextInputState_Params& params);
   void OnDidChangeBodyBackgroundColor(SkColor color);
   void OnStartContentIntent(const GURL& content_url);
   void OnSetNeedsBeginFrame(bool enabled);
   void OnSmartClipDataExtracted(const base::string16& result);
 
-  void LockResources();
-  void UnlockResources();
-
   long GetNativeImeAdapter();
 
   void WasResized();
 
   void GetScaledContentBitmap(
       float scale,
       SkBitmap::Config bitmap_config,
       gfx::Rect src_subrect,
       const base::Callback<void(bool, const SkBitmap&)>& result_callback);
 
@@ skipping 52 matching lines @@
       const base::Callback<void(bool, const SkBitmap&)>& callback,
       scoped_ptr<cc::CopyOutputResult> result);
 
   // DevTools ScreenCast support for Android WebView.
   void SynchronousCopyContents(
       const gfx::Rect& src_subrect_in_pixel,
       const gfx::Size& dst_size_in_pixel,
       const base::Callback<void(bool, const SkBitmap&)>& callback,
       const SkBitmap::Config config);
 
+  // Only use for when the content is forcibly being evicted, such as when
+  // ContentViewCore is gone or when the context has been lost.

[piman, 2014/03/04 19:09:55]

nit: can you describe what it does rather than when to use it?

[powei, 2014/03/04 20:49:22]

Done.

+  void ReleaseLocksOnSurface();
+
   // The model object.
   RenderWidgetHostImpl* host_;
 
   // Used to track whether this render widget needs a BeginFrame.
   bool needs_begin_frame_;
 
   bool is_showing_;
 
   // ContentViewCoreImpl is our interface to the view system.
   ContentViewCoreImpl* content_view_core_;
@@ skipping 51 matching lines @@
   scoped_ptr<DelegatedFrameEvictor> frame_evictor_;
 
   bool using_delegated_renderer_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_