chromeos: Move files in //ash/common to //ash, part 3

ash/key_event_watcher.cc

 // Copyright 2016 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 "ash/common/key_event_watcher.h"
+#include "ash/key_event_watcher.h"
 
 namespace ash {
 
 KeyEventWatcher::KeyEventWatcher() {}
 
 KeyEventWatcher::~KeyEventWatcher() {}
 
 void KeyEventWatcher::AddKeyEventCallback(const ui::Accelerator& key,
                                           const KeyEventCallback& callback) {
   callback_map_.insert(std::make_pair(key, callback));
 }
 
 bool KeyEventWatcher::HandleKeyEvent(const ui::KeyEvent& event) {
   auto iter = callback_map_.find(ui::Accelerator(event));
   if (iter != callback_map_.end()) {
     iter->second.Run(event);
     return true;
   }
   return false;
 }
 
 }  // namespace ash