events: Change gesture-event handler in EventHandler to not return any values.

chrome/browser/ui/views/browser_action_view.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 CHROME_BROWSER_UI_VIEWS_BROWSER_ACTION_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_BROWSER_ACTION_VIEW_H_
 
 #include <string>
 
 #include "chrome/browser/extensions/extension_action_icon_factory.h"
@@ skipping 140 matching lines @@
   // MenuButton behavior overrides.  These methods all default to TextButton
   // behavior unless this button is a popup.  In that case, it uses MenuButton
   // behavior.  MenuButton has the notion of a child popup being shown where the
   // button will stay in the pushed state until the "menu" (a popup in this
   // case) is dismissed.
   virtual bool Activate() OVERRIDE;
   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
   virtual bool OnKeyReleased(const ui::KeyEvent& event) OVERRIDE;
-  virtual ui::EventResult OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
+  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
 
   // Overridden from ui::AcceleratorTarget.
   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 
   // Notifications when to set button state to pushed/not pushed (for when the
   // popup/context menu is hidden or shown by the container).
   void SetButtonPushed();
   void SetButtonNotPushed();
 
   // Whether the browser action is enabled on this tab. Note that we cannot use
@@ skipping 57 matching lines @@
 
   // Responsible for running the menu.
   scoped_ptr<views::MenuRunner> menu_runner_;
 
   friend class base::DeleteHelper<BrowserActionButton>;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_BROWSER_ACTION_VIEW_H_