Move content's a plugin, ppapi_plugin, utility, and worker subdirectories to the content namespace.

content/plugin/plugin_channel.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_PLUGIN_PLUGIN_CHANNEL_H_
 #define CONTENT_PLUGIN_PLUGIN_CHANNEL_H_
 
 #include <vector>
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_handle.h"
 #include "base/process.h"
 #include "build/build_config.h"
 #include "content/common/np_channel_base.h"
 #include "content/plugin/webplugin_delegate_stub.h"
 
 namespace base {
 class WaitableEvent;
 }
 
+namespace content {
+
 // Encapsulates an IPC channel between the plugin process and one renderer
 // process.  On the renderer side there's a corresponding PluginChannelHost.
 class PluginChannel : public NPChannelBase {
  public:
   // Get a new PluginChannel object for the current process to talk to the
   // given renderer process. The renderer ID is an opaque unique ID generated
   // by the browser.
   static PluginChannel* GetPluginChannel(
       int renderer_id, base::MessageLoopProxy* ipc_message_loop);
 
@@ skipping 57 matching lines @@
   int renderer_id_;
 
   int in_send_;  // Tracks if we're in a Send call.
   bool log_messages_;  // True if we should log sent and received messages.
   bool incognito_; // True if the renderer is in incognito mode.
   scoped_refptr<MessageFilter> filter_;  // Handles the modal dialog events.
 
   DISALLOW_COPY_AND_ASSIGN(PluginChannel);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_PLUGIN_PLUGIN_CHANNEL_H_