Remove calls to deprecated MessageLoop methods on Windows and Linux.

blimp/client/core/contents/blimp_navigation_controller_impl_unittest.cc

 // Copyright 2016 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 "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "blimp/client/core/contents/blimp_navigation_controller_delegate.h"
 #include "blimp/client/core/contents/blimp_navigation_controller_impl.h"
 #include "blimp/client/core/contents/fake_navigation_feature.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::_;
 
 namespace blimp {
 namespace client {
@@ skipping 28 matching lines @@
   EXPECT_EQ(kExampleURL, navigation_controller.GetURL());
 
   EXPECT_CALL(feature, GoBack(_));
   EXPECT_CALL(feature, GoForward(_));
   EXPECT_CALL(feature, Reload(_));
 
   navigation_controller.GoBack();
   navigation_controller.GoForward();
   navigation_controller.Reload();
 
-  loop.RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace
 }  // namespace client
 }  // namespace blimp