Let Chrome app handle Ash accelerators first if the app is launched as a window

ui/views/focus/focus_manager_delegate.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_FOCUS_FOCUS_MANAGER_DELEGATE_H_
+#define UI_VIEWS_FOCUS_FOCUS_MANAGER_DELEGATE_H_
+#pragma once
+
+namespace ui {
+class AcceleratorTarget;
+class AcceleratorManager;
+}
+
+namespace views {
+
+// Delegate interface for views::FocusManager.
+class VIEWS_EXPORT FocusManagerDelegate {
+ public:
+  virtual ~FocusManagerDelegate() {}
+
+  // Activate the target associated with the specified accelerator.
+  // First, AcceleratorPressed handler of the most recently registered target
+  // is called, and if that handler processes the event (i.e. returns true),
+  // this method immediately returns. If not, we do the same thing on the next
+  // target, and so on.
+  // Returns true if an accelerator was activated.
+  virtual bool ProcessAccelerator(const ui::Accelerator& accelerator) = 0;
+
+  // Returns the AcceleratorTarget that should be activated for the specified
+  // keyboard accelerator, or NULL if no view is registered for that keyboard
+  // accelerator.
+  virtual ui::AcceleratorTarget* GetCurrentTargetForAccelerator(
+      const ui::Accelerator& accelerator) const = 0;
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_FOCUS_FOCUS_MANAGER_DELEGATE_H_