Expose locks for CopyFromCompositingSurface/CopyFromBackingStore API

content/browser/renderer_host/render_widget_host_view_android.h

Index: content/browser/renderer_host/render_widget_host_view_android.h
diff --git a/content/browser/renderer_host/render_widget_host_view_android.h b/content/browser/renderer_host/render_widget_host_view_android.h
index 869e5377cfc124ff45606f5b7b7cee1b92bed7f8..13f6bf0917e5033b65fc8191069696f3cdd179c5 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.h
+++ b/content/browser/renderer_host/render_widget_host_view_android.h
@@ -174,6 +174,8 @@ class RenderWidgetHostViewAndroid
                                        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;
@@ -217,9 +219,6 @@ class RenderWidgetHostViewAndroid
   void OnSetNeedsBeginFrame(bool enabled);
   void OnSmartClipDataExtracted(const base::string16& result);
 
-  void LockResources();
-  void UnlockResources();
-
   long GetNativeImeAdapter();
 
   void WasResized();
@@ -292,6 +291,10 @@ class RenderWidgetHostViewAndroid
       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_;