Remove calls to deprecated MessageLoop methods in content.

content/public/test/test_utils.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 "content/public/test/test_utils.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 171 matching lines @@
 }
 
 std::unique_ptr<base::Value> ExecuteScriptAndGetValue(
     RenderFrameHost* render_frame_host,
     const std::string& script) {
   ScriptCallback observer;
 
   render_frame_host->ExecuteJavaScriptForTests(
       base::UTF8ToUTF16(script),
       base::Bind(&ScriptCallback::ResultCallback, base::Unretained(&observer)));
-  base::MessageLoop* loop = base::MessageLoop::current();
-  loop->Run();
+  base::RunLoop().Run();
   return observer.result();
 }
 
 bool AreAllSitesIsolatedForTesting() {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kSitePerProcess);
 }
 
 void IsolateAllSitesForTesting(base::CommandLine* command_line) {
   command_line->AppendSwitch(switches::kSitePerProcess);
@@ skipping 177 matching lines @@
 
 void WebContentsDestroyedWatcher::Wait() {
   message_loop_runner_->Run();
 }
 
 void WebContentsDestroyedWatcher::WebContentsDestroyed() {
   message_loop_runner_->Quit();
 }
 
 }  // namespace content