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

content/renderer/webplugin_delegate_proxy.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_WEBPLUGIN_DELEGATE_PROXY_H_
 #define CONTENT_RENDERER_WEBPLUGIN_DELEGATE_PROXY_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 12 matching lines @@
 
 #if defined(OS_MACOSX)
 #include "base/hash_tables.h"
 #include "base/memory/linked_ptr.h"
 #endif
 
 struct NPObject;
 class NPObjectStub;
 class PluginChannelHost;
 struct PluginHostMsg_URLRequest_Params;
-class RenderViewImpl;
 class SkBitmap;
 
 namespace base {
 class WaitableEvent;
 }
 
 namespace skia {
 class PlatformCanvas;
 }
 
 namespace webkit {
 namespace npapi {
 class WebPlugin;
 }
 }
 
+namespace content {
+class RenderViewImpl;
+
 // An implementation of WebPluginDelegate that proxies all calls to
 // the plugin process.
 class WebPluginDelegateProxy
     : public webkit::npapi::WebPluginDelegate,
       public IPC::Listener,
       public IPC::Sender,
       public base::SupportsWeakPtr<WebPluginDelegateProxy> {
  public:
   WebPluginDelegateProxy(const std::string& mime_type,
                          const base::WeakPtr<RenderViewImpl>& render_view);
@@ skipping 260 matching lines @@
   // on the last buffer flip and which has not yet been re-painted in the
   // back-buffer.
   gfx::Rect front_buffer_diff_;
 
   // The url of the main frame hosting the plugin.
   GURL page_url_;
 
   DISALLOW_COPY_AND_ASSIGN(WebPluginDelegateProxy);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_RENDERER_WEBPLUGIN_DELEGATE_PROXY_H_