Remove calls to deprecated MessageLoop methods in chrome.

chrome/browser/net/dns_probe_browsertest.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 <memory>
 #include <set>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
@@ skipping 588 matching lines @@
       BrowserThread::IO, FROM_HERE,
       Bind(&DnsProbeBrowserTestIOThreadHelper::StartDelayedProbes,
            Unretained(helper_),
            expected_delayed_probe_count));
 }
 
 DnsProbeStatus DnsProbeBrowserTest::WaitForSentStatus() {
   CHECK(!awaiting_dns_probe_status_);
   while (dns_probe_status_queue_.empty()) {
     awaiting_dns_probe_status_ = true;
-    MessageLoop::current()->Run();
+    base::RunLoop().Run();
     awaiting_dns_probe_status_ = false;
   }
 
   CHECK(!dns_probe_status_queue_.empty());
   DnsProbeStatus status = dns_probe_status_queue_.front();
   dns_probe_status_queue_.pop_front();
   return status;
 }
 
 // Check title by roundtripping to renderer, to make sure any probe results
@@ skipping 364 matching lines @@
 
   EXPECT_EQ(error_page::DNS_PROBE_FINISHED_INCONCLUSIVE,
             WaitForSentStatus());
   EXPECT_EQ(0, pending_status_count());
   ExpectDisplayingLocalErrorPage("ERR_NAME_NOT_RESOLVED");
 }
 
 }  // namespace
 
 }  // namespace chrome_browser_net