Use base::MessageLoop in more files.

content/browser/renderer_host/p2p/socket_host_tcp_unittest.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 "content/browser/renderer_host/p2p/socket_host_tcp.h"
 
 #include <deque>
 
 #include "base/sys_byteorder.h"
 #include "content/browser/renderer_host/p2p/socket_host_test_utils.h"
@@ skipping 321 matching lines @@
 
   std::vector<char> packet;
   CreateRandomPacket(&packet);
   socket_host_->Send(dest_, packet);
 
   EXPECT_EQ(0U, sent_data_.size());
 }
 
 // Verify that asynchronous writes are handled correctly.
 TEST_F(P2PSocketHostStunTcpTest, AsyncWrites) {
-  MessageLoop message_loop;
+  base::MessageLoop message_loop;
 
   socket_->set_async_write(true);
 
   EXPECT_CALL(sender_, Send(
       MatchMessage(static_cast<uint32>(P2PMsg_OnSendComplete::ID))))
       .Times(2)
       .WillRepeatedly(DoAll(DeleteArg<0>(), Return(true)));
 
   std::vector<char> packet1;
   CreateStunRequest(&packet1);
   socket_host_->Send(dest_, packet1);
 
   std::vector<char> packet2;
   CreateStunResponse(&packet2);
   socket_host_->Send(dest_, packet2);
 
   message_loop.RunUntilIdle();
 
   std::string expected_data;
   expected_data.append(packet1.begin(), packet1.end());
   expected_data.append(packet2.begin(), packet2.end());
 
   EXPECT_EQ(expected_data, sent_data_);
 }
 
 }  // namespace content