Merge 135178

Source/WebKit/chromium/public/WebPluginContainer.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 93 matching lines @@
     // Notifies whether the contents of the plugin are entirely opaque.
     virtual void setOpaque(bool) = 0;
 
     // Determines whether the given rectangle in this plugin is above all other
     // content. The rectangle is in the plugin's coordinate system.
     virtual bool isRectTopmost(const WebRect&) = 0;
 
     // Notifies when the plugin starts/stops accepting touch events.
     virtual void setIsAcceptingTouchEvents(bool) = 0;
 
+    // Notifies when the plugin starts/stops accepting wheel events. Without
+    // calling the function with true, the container might not always able to
+    // receive wheel events in some cases (such as when threaded compositing
+    // is in use but a scroll bar is not in use).
+    virtual void setWantsWheelEvents(bool) = 0;
+
     virtual WebPlugin* plugin() = 0;
     virtual void setPlugin(WebPlugin*) = 0;
 
     virtual float deviceScaleFactor() = 0;
     virtual float pageScaleFactor() = 0;
     virtual float pageZoomFactor() = 0;
 
 protected:
     ~WebPluginContainer() { }
 };
 
 } // namespace WebKit
 
 #endif