Move a bunch more code into the content namespace.

content/browser/browser_plugin/browser_plugin_host_factory.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_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_HOST_FACTORY_H_
 #define CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_HOST_FACTORY_H_
 
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/string16.h"
 #include "content/common/content_export.h"
 
-class WebContentsImpl;
-
 namespace content {
 
 class BrowserPluginEmbedder;
 class BrowserPluginGuest;
 class RenderViewHost;
+class WebContentsImpl;
 
 // Factory to create BrowserPlugin embedder and guest.
 class CONTENT_EXPORT BrowserPluginHostFactory {
  public:
   virtual BrowserPluginGuest* CreateBrowserPluginGuest(
       int instance_id,
       WebContentsImpl* web_contents,
       RenderViewHost* render_view_host) = 0;
 
   virtual BrowserPluginEmbedder* CreateBrowserPluginEmbedder(
       WebContentsImpl* web_contents,
       RenderViewHost* render_view_host) = 0;
 
  protected:
   virtual ~BrowserPluginHostFactory() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_HOST_FACTORY_H_