Remove calls to deprecated MessageLoop methods on Windows and Linux.

chrome/browser/prerender/prerender_resource_throttle_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 <set>
 #include <utility>
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 172 matching lines @@
 
   TestPrerenderManager* prerender_manager() {
     return &prerender_manager_;
   }
 
   TestPrerenderContents* test_contents() {
     return &test_contents_;
   }
 
   // Runs any tasks queued on either thread.
-  void RunEvents() {
-    message_loop_.RunUntilIdle();
-  }
+  void RunEvents() { base::RunLoop().RunUntilIdle(); }
 
  private:
   base::MessageLoopForIO message_loop_;
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread io_thread_;
 
   TestPrerenderManager prerender_manager_;
   TestPrerenderContents test_contents_;
 };
 
@@ skipping 118 matching lines @@
   // We should have cancelled the prerender.
   EXPECT_EQ(FINAL_STATUS_BAD_DEFERRED_REDIRECT,
             test_contents()->final_status());
 
   // Cleanup work so the prerender is gone.
   test_contents()->Cancel();
   RunEvents();
 }
 
 }  // namespace prerender