Made MessagePump a non-thread safe class.

net/dns/mdns_client_unittest.cc

 // Copyright 2013 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 <queue>
 
 #include "base/memory/ref_counted.h"
 #include "base/message_loop.h"
 #include "net/base/rand_callback.h"
 #include "net/base/test_completion_callback.h"
@@ skipping 334 matching lines @@
 }
 
 MDnsTest::~MDnsTest() {
 }
 
 void MDnsTest::TearDown() {
   base::MessageLoop::current()->RunUntilIdle();
 
   ASSERT_FALSE(test_client_->IsListeningForTests());
 
-  base::MessageLoop::current()->AssertIdle();
+  EXPECT_TRUE(base::MessageLoop::current()->IsIdleForTest());
 }
 
 void MDnsTest::SimulatePacketReceive(const char* packet, unsigned size) {
   socket_factory_->SimulateReceive(packet, size);
 }
 
 void MDnsTest::ExpectPacket(
     const char* packet,
     unsigned size) {
   EXPECT_CALL(*socket_factory_, OnSendTo(std::string(packet, size)))
@@ skipping 623 matching lines @@
 
   ASSERT_TRUE(InitConnection());
 
   EXPECT_CALL(delegate_, OnConnectionError(ERR_SOCKET_NOT_CONNECTED));
   callback.Run(ERR_SOCKET_NOT_CONNECTED);
 }
 
 }  // namespace
 
 }  // namespace net