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

ui/views/corewm/focus_controller.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 UI_VIEWS_COREWM_FOCUS_CONTROLLER_H_
 #define UI_VIEWS_COREWM_FOCUS_CONTROLLER_H_
 
 #include "base/compiler_specific.h"
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/client/focus_client.h"
@@ skipping 53 matching lines @@
       aura::client::FocusChangeObserver* observer) OVERRIDE;
   virtual void FocusWindow(aura::Window* window,
                            const ui::Event* event) OVERRIDE;
   virtual aura::Window* GetFocusedWindow() OVERRIDE;
 
   // Overridden from ui::EventHandler:
   virtual ui::EventResult OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
   virtual ui::EventResult OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
   virtual ui::EventResult OnScrollEvent(ui::ScrollEvent* event) OVERRIDE;
   virtual ui::EventResult OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
-  virtual ui::EventResult OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
+  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
 
   // Overridden from aura::WindowObserver:
   virtual void OnWindowVisibilityChanging(aura::Window* window,
                                          bool visible) OVERRIDE;
   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
   virtual void OnWillRemoveWindow(aura::Window* window) OVERRIDE;
 
   // Overridden from aura::EnvObserver:
   virtual void OnWindowInitialized(aura::Window* window) OVERRIDE;
@@ skipping 24 matching lines @@
 
   scoped_ptr<FocusRules> rules_;
 
   DISALLOW_COPY_AND_ASSIGN(FocusController);
 };
 
 }  // namespace corewm
 }  // namespace views
 
 #endif  // UI_VIEWS_COREWM_FOCUS_CONTROLLER_H_