Remove calls to deprecated MessageLoop methods on Windows and Linux.

content/browser/web_contents/web_contents_view_aura_browsertest.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/browser/web_contents/web_contents_view_aura.h"
 
 #include <stddef.h>
 #include <tuple>
 
 #include "base/command_line.h"
@@ skipping 155 matching lines @@
         navigated_(false),
         should_quit_loop_(false) {
   }
 
   ~NavigationWatcher() override {}
 
   void WaitUntilNavigationStarts() {
     if (navigated_)
       return;
     should_quit_loop_ = true;
-    base::MessageLoop::current()->Run();
+    base::RunLoop().Run();
   }
 
  private:
   // Overridden from WebContentsObserver:
   void DidStartNavigationToPendingEntry(
       const GURL& validated_url,
       NavigationController::ReloadType reload_type) override {
     navigated_ = true;
     if (should_quit_loop_)
       base::MessageLoop::current()->QuitWhenIdle();
@@ skipping 940 matching lines @@
     details = dispatcher->OnEventFromSource(&release);
     ASSERT_FALSE(details.dispatcher_destroyed);
     WaitAFrame();
 
     EXPECT_LT(0, tracker.num_overscroll_updates());
     EXPECT_FALSE(tracker.overscroll_completed());
   }
 }
 
 }  // namespace content