Move a bunch more code into the content namespace.

content/public/browser/web_contents_observer.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_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 
 #include "base/callback_forward.h"
 #include "base/process_util.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/common/page_transition_types.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "webkit/glue/window_open_disposition.h"
 
-class WebContentsImpl;
-
 namespace content {
 
 class RenderViewHost;
 class WebContents;
+class WebContentsImpl;
 struct FrameNavigateParams;
 struct LoadCommittedDetails;
 struct Referrer;
 
 // An observer API implemented by classes which are interested in various page
 // load events from WebContents.  They also get a chance to filter IPC messages.
 class CONTENT_EXPORT WebContentsObserver : public IPC::Listener,
                                            public IPC::Sender {
  public:
   // Only one of the two methods below will be called when a RVH is created for
@@ skipping 135 matching lines @@
   WebContentsObserver();
 
   virtual ~WebContentsObserver();
 
   // Start observing a different WebContents; used with the default constructor.
   void Observe(WebContents* web_contents);
 
   WebContents* web_contents() const;
 
  private:
-  friend class ::WebContentsImpl;
+  friend class WebContentsImpl;
 
   // Invoked from WebContentsImpl. Invokes WebContentsDestroyed and NULL out
   // |web_contents_|.
   void WebContentsImplDestroyed();
 
   WebContentsImpl* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_