aura: Start converting event-filters into event-handlers.

ui/aura/root_window.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_AURA_ROOT_WINDOW_H_
 #define UI_AURA_ROOT_WINDOW_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 233 matching lines @@
 
   // Gets the last location seen in a mouse event in this root window's
   // coordinates. This may return a point outside the root window's bounds.
   gfx::Point GetLastMouseLocationInRoot() const;
 
   // Overridden from Window:
   virtual RootWindow* GetRootWindow() OVERRIDE;
   virtual const RootWindow* GetRootWindow() const OVERRIDE;
   virtual void SetTransform(const ui::Transform& transform) OVERRIDE;
 
+  // Overridden from ui::EventTarget:
+  virtual ui::EventTarget* GetParentTarget() OVERRIDE;
+
   // Overridden from ui::CompositorDelegate:
   virtual void ScheduleDraw() OVERRIDE;
 
   // Overridden from ui::CompositorObserver:
   virtual void OnCompositingDidCommit(ui::Compositor*) OVERRIDE;
   virtual void OnCompositingWillStart(ui::Compositor*) OVERRIDE;
   virtual void OnCompositingStarted(ui::Compositor*) OVERRIDE;
   virtual void OnCompositingEnded(ui::Compositor*) OVERRIDE;
   virtual void OnCompositingAborted(ui::Compositor*) OVERRIDE;
 
@@ skipping 144 matching lines @@
 
   CompositorLock* compositor_lock_;
   bool draw_on_compositor_unlock_;
 
   DISALLOW_COPY_AND_ASSIGN(RootWindow);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_H_