Remove calls to deprecated MessageLoop methods on Windows and Linux.

ipc/ipc_channel_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 "base/run_loop.h"
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
@@ skipping 56 matching lines @@
   CloseHandle(pipe);  // The channel duplicates the handle.
   listener.Init(sender());
 
   // Connect to channel and start client.
   ASSERT_TRUE(ConnectChannel());
   ASSERT_TRUE(StartClient());
 
   IPC::TestChannelListener::SendOneMessage(sender(), "hello from parent");
 
   // Run message loop.
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 
   // Close the channel so the client's OnChannelError() gets fired.
   channel()->Close();
 
   EXPECT_TRUE(WaitForClientShutdown());
   DestroyChannel();
 }
 #endif  // defined (OS_WIN)
 
 TEST_F(IPCChannelTest, ChannelProxyTest) {
@@ skipping 73 matching lines @@
       main_message_loop.task_runner()));
   CHECK(channel->Connect());
   listener.Init(channel.get());
   IPC::TestChannelListener::SendOneMessage(channel.get(), "hello from child");
 
   base::RunLoop().Run();
   return 0;
 }
 
 }  // namespace