Add ShellAcceleratorController that managers global keyboard accelerators.

ui/aura_shell/desktop_event_filter.h

 // Copyright (c) 2011 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_SHELL_DESKTOP_EVENT_FILTER_H_
 #define UI_AURA_SHELL_DESKTOP_EVENT_FILTER_H_
 #pragma once
 
 #include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "ui/aura/event_filter.h"
 #include "ui/aura_shell/aura_shell_export.h"
 
 namespace aura_shell {
 namespace internal {
 
+class ShellAcceleratorFilter;
+
 // DesktopEventFilter gets all desktop events first and can provide actions to
 // those events. It implements desktop features such as click to activate a
 // window and cursor change when moving mouse.
 // Additional event filters can be added to DesktopEventFilter. Events will
 // pass through those additional filters in their addition order and could be
 // consumed by any of those filters. If an event is consumed by a filter, the
 // rest of the filter(s) and DesktopEventFilter will not see the consumed event.
 class AURA_SHELL_EXPORT DesktopEventFilter : public aura::EventFilter {
  public:
   DesktopEventFilter();
@@ skipping 22 matching lines @@
   // Dispatches event to addtional filters. Returns false or
   // ui::TOUCH_STATUS_UNKNOWN if event is consumed.
   bool FilterKeyEvent(aura::Window* target, aura::KeyEvent* event);
   bool FilterMouseEvent(aura::Window* target, aura::MouseEvent* event);
   ui::TouchStatus FilterTouchEvent(aura::Window* target,
                                    aura::TouchEvent* event);
 
   // Additional event filters that pre-handles events.
   ObserverList<aura::EventFilter, true> filters_;
 
+  // An event filter that pre-handles global accelerators.
+  scoped_ptr<ShellAcceleratorFilter> shell_accelerator_filter_;
+
   DISALLOW_COPY_AND_ASSIGN(DesktopEventFilter);
 };
 
 }  // namespace internal
 }  // namespace aura_shell
 
 #endif  // UI_AURA_SHELL_DESKTOP_EVENT_FILTER_H_