Enable keyboard accelerators while a menu is open

ash/accelerators/ash_menu_event_filter_delegate.h

Index: ash/accelerators/ash_menu_event_filter_delegate.h
diff --git a/ash/accelerators/ash_menu_event_filter_delegate.h b/ash/accelerators/ash_menu_event_filter_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..781f655afedcfa340731900089c6b72daa636d5d
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+++ b/ash/accelerators/ash_menu_event_filter_delegate.h
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+// Copyright 2015 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_ACCELERATORS_ASH_MENU_EVENT_FILTER_DELEGATE_H_
+#define ASH_ACCELERATORS_ASH_MENU_EVENT_FILTER_DELEGATE_H_
+
+#include "ui/views/controls/menu/menu_event_filter.h"
+
+namespace ui {
+class AcceleratorHistory;
+}  // namespace ui
+
+namespace ash {
+
+// Defines an ash-specific implementation of the menu event filter delegate that
+// can handle the accelerators while a menu is present.
+class AshMenuEventFilterDelegate : public views::MenuEventFilter::Delegate {
+ public:
+  AshMenuEventFilterDelegate(ui::AcceleratorHistory* history);
+  ~AshMenuEventFilterDelegate() override;
+
+  // views::MenuEventFilter::Delegate:
+  void StoreInHistory(const ui::Accelerator& accelerator) override;
+  bool ShouldCloseMenuAndRepostAccelerator(
+      const ui::Accelerator& accelerator) const override;
+  void ProcessAcceleratorNow(const ui::Accelerator& accelerator) override;
+
+ private:
+  ui::AcceleratorHistory* accelerator_history_;  // Not owned.
+
+  DISALLOW_COPY_AND_ASSIGN(AshMenuEventFilterDelegate);
+};
+
+}  // namespace ash
+
+#endif  // ASH_ACCELERATORS_ASH_MENU_EVENT_FILTER_DELEGATE_H_