ash: Fix touch-event handling for modal windows.

ash/wm/window_modality_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 ASH_WM_WINDOW_MODALITY_CONTROLLER_H_
 #define ASH_WM_WINDOW_MODALITY_CONTROLLER_H_
 #pragma once
 
 #include <vector>
 
 #include "ash/ash_export.h"
 #include "base/compiler_specific.h"
 #include "ui/aura/env_observer.h"
 #include "ui/aura/event_filter.h"
 #include "ui/aura/window_observer.h"
 
+namespace aura {
+class LocatedEvent;
+}
+
 namespace ash {
 
 namespace wm {
 // Returns the window-modal transient child of |window|, or NULL if |window|
 // does not have any window-modal transient children.
 ASH_EXPORT aura::Window* GetWindowModalTransient(aura::Window* window);
 }
 
 namespace internal {
 
@@ skipping 20 matching lines @@
 
   // Overridden from aura::EnvObserver:
   virtual void OnWindowInitialized(aura::Window* window) OVERRIDE;
 
   // Overridden from aura::WindowObserver:
   virtual void OnWindowVisibilityChanged(aura::Window* window,
                                          bool visible) OVERRIDE;
   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
 
  private:
+  // Processes a mouse/touch event, and returns true if the event should be
+  // consumed.
+  bool ProcessLocatedEvent(aura::Window* target,
+                           aura::LocatedEvent* event);
+
   std::vector<aura::Window*> windows_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowModalityController);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_MODALITY_CONTROLLER_H_