Revert 148511 - Add pin icon to the omnibar in windows 8 metro mode.

chrome/browser/ui/metro_pinned_state_observer.h

Index: chrome/browser/ui/metro_pinned_state_observer.h
===================================================================
--- chrome/browser/ui/metro_pinned_state_observer.h	(revision 150228)
+++ chrome/browser/ui/metro_pinned_state_observer.h	(working copy)
@@ -1,24 +0,0 @@
-// 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 CHROME_BROWSER_UI_METRO_PINNED_STATE_OBSERVER_H_
-#define CHROME_BROWSER_UI_METRO_PINNED_STATE_OBSERVER_H_
-
-namespace content {
-class WebContents;
-}
-
-// Objects implement this interface to get notified about changes in the
-// metro pinned state.
-class MetroPinnedStateObserver {
- public:
-  // Notification that the pinned state of the current URL changed.
-  virtual void MetroPinnedStateChanged(content::WebContents* source,
-                                       bool is_pinned) = 0;
-
- protected:
-  virtual ~MetroPinnedStateObserver() {}
-};
-
-#endif  // CHROME_BROWSER_UI_METRO_PINNED_STATE_OBSERVER_H_