Move a bunch more code into the content namespace.

content/browser/browser_plugin/old/old_browser_plugin_host.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_OLD_OLD_BROWSER_PLUGIN_HOST_H__
 #define CONTENT_BROWSER_BROWSER_PLUGIN_OLD_OLD_BROWSER_PLUGIN_HOST_H__
 
 #include <map>
 
 #include "base/compiler_specific.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "ppapi/c/pp_instance.h"
 #include "ui/gfx/size.h"
 
-class WebContentsImpl;
-
 namespace IPC {
 struct ChannelHandle;
 }
 
 namespace content {
 
 class RenderProcessHost;
+class WebContentsImpl;
 
 namespace old {
 
 
 // A BrowserPluginHost object is used by both embedders and guests.
 // The primary purpose of BrowserPluginHost is to allow an embedder
 // to manage the lifetime of its guests. It cleans up its guests
 // on navigation, crashes, and "hides" guests when it hides.
 // For the guest, BrowserPluginHost keeps track of its embedder,
 // and its BrowserPlugin instance ID.
@@ skipping 90 matching lines @@
   GuestMap guests_;
   ContainerInstanceMap guests_by_container_id_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginHost);
 };
 
 }  // namespace old
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_OLD_OLD_BROWSER_PLUGIN_HOST_H_