Remove calls to deprecated MessageLoop methods in chrome.

chrome/browser/printing/cloud_print/privet_http_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 "chrome/browser/printing/cloud_print/privet_http.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/json/json_reader.h"
@@ skipping 331 matching lines @@
     return SuccessfulResponseToURL(url, response);
   }
 
 
   void RunFor(base::TimeDelta time_period) {
     base::CancelableCallback<void()> callback(base::Bind(
         &PrivetHTTPTest::Stop, base::Unretained(this)));
     base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
         FROM_HERE, callback.callback(), time_period);
 
-    base::MessageLoop::current()->Run();
+    base::RunLoop().Run();
     callback.Cancel();
   }
 
   void Stop() { base::MessageLoop::current()->QuitWhenIdle(); }
 
  protected:
   base::MessageLoop loop_;
   scoped_refptr<net::TestURLRequestContextGetter> request_context_;
   net::TestURLFetcherFactory fetcher_factory_;
   std::unique_ptr<PrivetV1HTTPClient> privet_client_;
@@ skipping 753 matching lines @@
   base::Closure quit_;
 };
 
 TEST_F(PrivetHttpWithServerTest, HttpServer) {
   EXPECT_TRUE(Run());
 }
 
 }  // namespace
 
 }  // namespace cloud_print