Remove calls to deprecated MessageLoop methods in net.

net/proxy/proxy_resolver_v8_tracing_unittest.cc

 // Copyright (c) 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 "net/proxy/proxy_resolver_v8_tracing.h"
 
 #include <string>
 #include <utility>
 
 #include "base/files/file_util.h"
@@ skipping 703 matching lines @@
     num_cancelled_requests_++;
   }
 
   void SetAction(const base::Callback<void(void)>& action) {
     action_ = action;
   }
 
   // Waits until Resolve() has been called.
   void WaitUntilRequestIsReceived() {
     waiting_for_resolve_ = true;
-    base::MessageLoop::current()->Run();
+    base::RunLoop().Run();
     DCHECK(waiting_for_resolve_);
     waiting_for_resolve_ = false;
   }
 
   int num_cancelled_requests() const {
     return num_cancelled_requests_;
   }
 
  private:
   int num_cancelled_requests_;
@@ skipping 281 matching lines @@
                 proxy_uri.substr(0, proxy_uri.find(':') + 1));
     } else {
       NOTREACHED();
     }
   }
 }
 
 }  // namespace
 
 }  // namespace net