Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

content/common/webmessageportchannel_impl.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_COMMON_WEBMESSAGEPORTCHANNEL_IMPL_H_
 #define CONTENT_COMMON_WEBMESSAGEPORTCHANNEL_IMPL_H_
 
 #include <queue>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
 #include "base/synchronization/lock.h"
 #include "ipc/ipc_listener.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebMessagePortChannel.h"
 
+namespace content {
+
 // This is thread safe.
 class WebMessagePortChannelImpl
     : public WebKit::WebMessagePortChannel,
       public IPC::Listener,
       public base::RefCountedThreadSafe<WebMessagePortChannelImpl> {
  public:
   WebMessagePortChannelImpl();
   WebMessagePortChannelImpl(int route_id, int message_port_id);
 
   // Queues received and incoming messages until there are no more in-flight
@@ skipping 39 matching lines @@
 
   WebKit::WebMessagePortChannelClient* client_;
   base::Lock lock_;  // Locks access to above.
 
   int route_id_;  // The routing id for this object.
   int message_port_id_;  // A globally unique identifier for this message port.
 
   DISALLOW_COPY_AND_ASSIGN(WebMessagePortChannelImpl);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_COMMON_WEBMESSAGEPORTCHANNEL_IMPL_H_