Remove all remaining traces of MessageLoopProxy.

components/data_reduction_proxy/content/browser/content_lofi_ui_service_unittest.cc

 // Copyright 2015 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 "components/data_reduction_proxy/content/browser/content_lofi_ui_service.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 26 matching lines @@
     EXPECT_TRUE(
         content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
 
     net::TestURLRequestContext context(true);
     net::MockClientSocketFactory mock_socket_factory;
     net::TestDelegate delegate;
     context.set_client_socket_factory(&mock_socket_factory);
     context.Init();
 
     content_lofi_ui_service_.reset(new ContentLoFiUIService(
-        content::BrowserThread::GetMessageLoopProxyForThread(
+        content::BrowserThread::GetTaskRunnerForThread(
             content::BrowserThread::UI),
         base::Bind(&ContentLoFiUIServiceTest::OnLoFiResponseReceivedCallback,
                    base::Unretained(this))));
 
     std::unique_ptr<net::URLRequest> request =
         CreateRequest(context, &delegate);
 
     content_lofi_ui_service_->OnLoFiReponseReceived(*request, is_preview);
 
     content::BrowserThread::PostTask(
@@ skipping 60 matching lines @@
   content::BrowserThread::PostTask(
       content::BrowserThread::IO, FROM_HERE,
       base::Bind(&ContentLoFiUIServiceTest::RunTestOnIOThread,
                  base::Unretained(this), &ui_run_loop, true));
   ui_run_loop.Run();
   base::RunLoop().RunUntilIdle();
   VerifyOnLoFiResponseReceivedCallback(true);
 }
 
 }  // namespace data_reduction_proxy