chromeos: Implement power button animations for Aura.

chrome/browser/chromeos/chrome_browser_main_chromeos.h

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.h
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.h b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
index 80df06671bd2539d95dcf19d5cdc8896cc83f2cb..07c4648caf3112e1b08da19ffec3ea7dfe388118 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.h
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -14,6 +14,7 @@ class SessionManagerObserver;
 
 #if defined(USE_AURA)
 class InitialBrowserWindowObserver;
+class PowerButtonObserver;
 #endif
 }  // namespace chromeos
 
@@ -42,6 +43,7 @@ class ChromeBrowserMainPartsChromeos : public ChromeBrowserMainPartsLinux {
 #if defined(USE_AURA)
   scoped_ptr<chromeos::InitialBrowserWindowObserver>
       initial_browser_window_observer_;
+  scoped_ptr<chromeos::PowerButtonObserver> power_button_observer_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainPartsChromeos);