Disambiguate OnMouseCaptureLost from OnMouseReleased, etc.

views/view.h

Index: views/view.h
diff --git a/views/view.h b/views/view.h
index e09f0beefc874ec995b1892433843988bdedba35..a560f4010ae7b4662a01a5f26395ade6c4719919 100644
--- a/views/view.h
+++ b/views/view.h
@@ -621,13 +621,14 @@ class View : public AcceleratorTarget {
   // This method is invoked when the user releases the mouse
   // button. The event is in the receiver's coordinate system.
   //
-  // If canceled is true it indicates the mouse press/drag was canceled by a
-  // system/user gesture.
-  //
   // Default implementation notifies the ContextMenuController is appropriate.
   // Subclasses that wish to honor the ContextMenuController should invoke
   // super.
-  virtual void OnMouseReleased(const MouseEvent& event, bool canceled);
+  virtual void OnMouseReleased(const MouseEvent& event);
+
+  // This method is invoked when the mouse press/drag was canceled by a
+  // system/user gesture.
+  virtual void OnMouseCaptureLost();
 
   // This method is invoked when the mouse is above this control
   // The event is in the receiver's coordinate system.
@@ -1230,7 +1231,7 @@ class View : public AcceleratorTarget {
   // method. If a drag is detected, DoDrag is invoked.
   bool ProcessMousePressed(const MouseEvent& event, DragInfo* drop_info);
   bool ProcessMouseDragged(const MouseEvent& event, DragInfo* drop_info);
-  void ProcessMouseReleased(const MouseEvent& event, bool canceled);
+  void ProcessMouseReleased(const MouseEvent& event);
 
 #if defined(TOUCH_UI)
   // RootView will invoke this with incoming TouchEvents. Returns the