Move Extension into extensions namespace

chrome/common/extensions/extension_messages.cc

 // 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.
 
 #include "chrome/common/extensions/extension_messages.h"
 
+#include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/manifest.h"
 #include "content/public/common/common_param_traits.h"
 
+using extensions::Extension;
+
 ExtensionMsg_Loaded_Params::ExtensionMsg_Loaded_Params()
     : location(Extension::INVALID),
       creation_flags(Extension::NO_FLAGS){}
 
 ExtensionMsg_Loaded_Params::~ExtensionMsg_Loaded_Params() {}
 
 ExtensionMsg_Loaded_Params::ExtensionMsg_Loaded_Params(
     const Extension* extension)
     : manifest(extension->manifest()->value()->DeepCopy()),
       location(extension->location()),
@@ skipping 136 matching lines @@
          ReadParam(m, iter, &p->explicit_hosts) &&
          ReadParam(m, iter, &p->scriptable_hosts);
 }
 
 void ParamTraits<ExtensionMsg_Loaded_Params>::Log(const param_type& p,
                                                   std::string* l) {
   l->append(p.id);
 }
 
 }  // namespace IPC