Reverting r12383, caused a build breakage on all platforms.

chrome/views/controls/button/custom_button.h

 // Copyright (c) 2006-2008 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 CHROME_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 #define CHROME_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 
 #include "chrome/common/animation.h"
 #include "chrome/views/controls/button/button.h"
 
@@ skipping 25 matching lines @@
   void StartThrobbing(int cycles_til_stop);
 
   // Set how long the hover animation will last for.
   void SetAnimationDuration(int duration);
 
   // Overridden from View:
   virtual void SetEnabled(bool enabled);
   virtual bool IsEnabled() const;
   virtual bool IsFocusable() const;
 
-  void set_triggerable_event_flags(int triggerable_event_flags) {
-    triggerable_event_flags_ = triggerable_event_flags;
-  }
-
-  int triggerable_event_flags() const {
-    return triggerable_event_flags_;
-  }
-
  protected:
   // Construct the Button with a Listener. See comment for Button's ctor.
   explicit CustomButton(ButtonListener* listener);
 
   // Returns true if the event is one that can trigger notifying the listener.
   // This implementation returns true if the left mouse button is down.
   virtual bool IsTriggerableEvent(const MouseEvent& e);
 
   // Overridden from View:
   virtual bool AcceleratorPressed(const Accelerator& accelerator);
@@ skipping 23 matching lines @@
   void SetHighlighted(bool highlighted);
   bool IsHighlighted() const;
 
   // Returns whether the button is pushed.
   bool IsPushed() const;
 
   // Should we animate when the state changes? Defaults to true, but false while
   // throbbing.
   bool animate_on_state_change_;
 
-  // Mouse event flags which can trigger button actions.
-  int triggerable_event_flags_;
-
   DISALLOW_COPY_AND_ASSIGN(CustomButton);
 };
 
 }  // namespace views
 
 #endif  // CHROME_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_