Revert of base: Remove use of MessageLoopProxy

base/posix/unix_domain_socket_linux_unittest.cc

Index: base/posix/unix_domain_socket_linux_unittest.cc
diff --git a/base/posix/unix_domain_socket_linux_unittest.cc b/base/posix/unix_domain_socket_linux_unittest.cc
index c05141cdcf132475da2a15299745d42ce853ff5a..60b2bb8a47070496e47acd4448e979408ac0f084 100644
--- a/base/posix/unix_domain_socket_linux_unittest.cc
+++ b/base/posix/unix_domain_socket_linux_unittest.cc
@@ -10,11 +10,9 @@
 #include "base/bind_helpers.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
-#include "base/location.h"
 #include "base/memory/scoped_vector.h"
 #include "base/pickle.h"
 #include "base/posix/unix_domain_socket_linux.h"
-#include "base/single_thread_task_runner.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -34,10 +32,11 @@
 
   // Have the thread send a synchronous message via the socket.
   Pickle request;
-  message_thread.task_runner()->PostTask(
+  message_thread.message_loop()->PostTask(
       FROM_HERE,
-      Bind(IgnoreResult(&UnixDomainSocket::SendRecvMsg), fds[1],
-           static_cast<uint8_t*>(NULL), 0U, static_cast<int*>(NULL), request));
+      Bind(IgnoreResult(&UnixDomainSocket::SendRecvMsg),
+           fds[1], static_cast<uint8_t*>(NULL), 0U, static_cast<int*>(NULL),
+           request));
 
   // Receive the message.
   ScopedVector<base::ScopedFD> message_fds;
@@ -52,8 +51,9 @@
 
   // Check that the thread didn't get blocked.
   WaitableEvent event(false, false);
-  message_thread.task_runner()->PostTask(
-      FROM_HERE, Bind(&WaitableEvent::Signal, Unretained(&event)));
+  message_thread.message_loop()->PostTask(
+      FROM_HERE,
+      Bind(&WaitableEvent::Signal, Unretained(&event)));
   ASSERT_TRUE(event.TimedWait(TimeDelta::FromMilliseconds(5000)));
 }