events: Update mouse-event handlers to not return EventResult.

chrome/browser/ui/views/immersive_mode_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 CHROME_BROWSER_UI_VIEWS_IMMERSIVE_MODE_CONTROLLER_H_
 #define CHROME_BROWSER_UI_VIEWS_IMMERSIVE_MODE_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/timer.h"
@@ skipping 31 matching lines @@
   // Returns the view that contains the top UI components (tabstrip, toolbar
   // etc.) during an immersive mode reveal. Can return NULL when not in a
   // revealing state.
   views::View* reveal_view();
 
   // If the controller is temporarily revealing the top views ensures that
   // the reveal view's layer is on top and hence visible over web contents.
   void MaybeStackViewAtTop();
 
   // ui::EventHandler overrides:
-  virtual ui::EventResult OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
+  virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
 
   // ui::ImplicitAnimationObserver overrides:
   virtual void OnImplicitAnimationsCompleted() OVERRIDE;
 
   // Testing interface.
   void StartRevealForTest();
   void OnRevealViewLostMouseForTest();
   void EndRevealForTest();
 
  private:
@@ skipping 52 matching lines @@
 #if defined(USE_AURA)
   // Observer to disable immersive mode when window leaves the maximized state.
   class WindowObserver;
   scoped_ptr<WindowObserver> window_observer_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ImmersiveModeController);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_IMMERSIVE_MODE_CONTROLLER_H_