Move a bunch of code in content\renderer to the content namespace.

content/renderer/notification_provider.h

 // 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 CONTENT_RENDERER_NOTIFICATION_PROVIDER_H_
 #define CONTENT_RENDERER_NOTIFICATION_PROVIDER_H_
 
 #include "content/public/renderer/render_view_observer.h"
 #include "content/renderer/active_notification_tracker.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNotification.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNotificationPresenter.h"
 
-class RenderViewImpl;
-
 namespace WebKit {
 class WebNotificationPermissionCallback;
 }
 
+namespace content {
+class RenderViewImpl;
+
 // NotificationProvider class is owned by the RenderView.  Only
 // to be used on the main thread.
-class NotificationProvider : public content::RenderViewObserver,
+class NotificationProvider : public RenderViewObserver,
                              public WebKit::WebNotificationPresenter {
  public:
   explicit NotificationProvider(RenderViewImpl* render_view);
   virtual ~NotificationProvider();
 
  private:
   // RenderView::Observer implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // WebKit::WebNotificationPresenter interface.
@@ skipping 17 matching lines @@
   void OnPermissionRequestComplete(int id);
   void OnNavigate();
 
   // A tracker object which manages the active notifications and the IDs
   // that are used to refer to them over IPC.
   ActiveNotificationTracker manager_;
 
   DISALLOW_COPY_AND_ASSIGN(NotificationProvider);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_RENDERER_NOTIFICATION_PROVIDER_H_