Add window cycle completion and cancellation accelerators in mus+ash.

ui/base/accelerators/accelerator.cc

 // 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.
 
 #include "ui/base/accelerators/accelerator.h"
 
 #include <stdint.h>
 
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
@@ skipping 19 matching lines @@
 const int kModifierMask =
     EF_SHIFT_DOWN | EF_CONTROL_DOWN | EF_ALT_DOWN | EF_COMMAND_DOWN;
 
 const int kInterestingFlagsMask =
     kModifierMask | EF_IS_SYNTHESIZED | EF_IS_REPEAT;
 
 }  // namespace
 
 Accelerator::Accelerator() : Accelerator(VKEY_UNKNOWN, EF_NONE) {}
 
-Accelerator::Accelerator(KeyboardCode key_code, int modifiers)
+Accelerator::Accelerator(KeyboardCode key_code,
+                         int modifiers,
+                         KeyState key_state)
     : key_code_(key_code),
-      key_state_(KeyState::PRESSED),
+      key_state_(key_state),
       modifiers_(modifiers & kInterestingFlagsMask) {}
 
 Accelerator::Accelerator(const KeyEvent& key_event)
     : key_code_(key_event.key_code()),
       key_state_(key_event.type() == ET_KEY_PRESSED ? KeyState::PRESSED
                                                     : KeyState::RELEASED),
       // |modifiers_| may include the repeat flag.
       modifiers_(key_event.flags() & kInterestingFlagsMask) {}
 
 Accelerator::Accelerator(const Accelerator& accelerator) {
@@ skipping 228 matching lines @@
 
     // Subtracting the size of the shortcut key and 1 for the '+' sign.
     shortcut_rtl.append(shortcut, 0, shortcut.length() - key_length - 1);
     shortcut.swap(shortcut_rtl);
   }
 
   return shortcut;
 }
 
 }  // namespace ui