Remove calls to deprecated MessageLoop methods in net.

net/dns/serial_worker_unittest.cc

 // Copyright (c) 2011 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 "net/dns/serial_worker.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 
 namespace {
 
 class SerialWorkerTest : public testing::Test {
@@ skipping 48 matching lines @@
     base::MessageLoop::current()->QuitNow();
   }
 
   void BreakNow(const std::string& b) {
     message_loop_->task_runner()->PostTask(
         FROM_HERE, base::Bind(&SerialWorkerTest::BreakCallback,
                               base::Unretained(this), b));
   }
 
   void RunUntilBreak(const std::string& b) {
-    message_loop_->Run();
+    base::RunLoop().Run();
     ASSERT_EQ(breakpoint_, b);
   }
 
   SerialWorkerTest()
       : input_value_(0),
         output_value_(-1),
         work_allowed_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
                       base::WaitableEvent::InitialState::NOT_SIGNALED),
         work_called_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
                      base::WaitableEvent::InitialState::NOT_SIGNALED),
@@ skipping 68 matching lines @@
   RunUntilBreak("OnWorkFinished");
 
   // No more tasks should remain.
   EXPECT_TRUE(message_loop_->IsIdleForTesting());
 }
 
 }  // namespace
 
 }  // namespace net