Update a bunch of files to the new location of notification files.

content/browser/site_instance.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 CONTENT_BROWSER_RENDERER_HOST_SITE_INSTANCE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_SITE_INSTANCE_H_
 #pragma once
 
-#include "chrome/common/notification_observer.h"
-#include "chrome/common/notification_registrar.h"
 #include "content/browser/renderer_host/render_process_host.h"
+#include "content/common/notification_observer.h"
+#include "content/common/notification_registrar.h"
 #include "googleurl/src/gurl.h"
 
 class BrowsingInstance;
 
 ///////////////////////////////////////////////////////////////////////////////
 //
 // SiteInstance class
 //
 // A SiteInstance is a data structure that is associated with all pages in a
 // given instance of a web site.  Here, a web site is identified by its
@@ skipping 166 matching lines @@
   // The web site that this SiteInstance is rendering pages for.
   GURL site_;
 
   // Whether SetSite has been called.
   bool has_site_;
 
   DISALLOW_COPY_AND_ASSIGN(SiteInstance);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_SITE_INSTANCE_H_