Remove calls to deprecated MessageLoop methods in blimp.

blimp/client/core/contents/blimp_contents_manager_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 "blimp/client/core/contents/blimp_contents_manager.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "blimp/client/core/compositor/blimp_compositor_dependencies.h"
 #include "blimp/client/core/contents/blimp_contents_impl.h"
 #include "blimp/client/core/contents/ime_feature.h"
 #include "blimp/client/core/contents/tab_control_feature.h"
 #include "blimp/client/core/render_widget/render_widget_feature.h"
 #include "blimp/client/support/compositor/mock_compositor_dependencies.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ skipping 93 matching lines @@
   std::unique_ptr<BlimpContentsImpl> blimp_contents =
       blimp_contents_manager.CreateBlimpContents(window_);
   id = blimp_contents.get()->id();
   BlimpContentsImpl* existing_contents =
       blimp_contents_manager.GetBlimpContents(id);
   EXPECT_EQ(blimp_contents.get(), existing_contents);
 
   EXPECT_CALL(tab_control_feature, CloseTab(id)).Times(1);
   blimp_contents.reset();
 
-  loop.RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
   EXPECT_EQ(nullptr, blimp_contents_manager.GetBlimpContents(id));
 }
 
 // TODO(mlliu): remove this test case (http://crbug.com/642558)
 TEST_F(BlimpContentsManagerTest, CreateTwoBlimpContentsDestroyAndCreate) {
   base::MessageLoop loop;
   ImeFeature ime_feature;
   RenderWidgetFeature render_widget_feature;
   MockTabControlFeature tab_control_feature;
   BlimpCompositorDependencies compositor_deps(
@@ skipping 13 matching lines @@
 
   blimp_contents.reset();
   std::unique_ptr<BlimpContentsImpl> third_blimp_contents =
       blimp_contents_manager.CreateBlimpContents(window_);
   EXPECT_NE(third_blimp_contents, nullptr);
 }
 
 }  // namespace
 }  // namespace client
 }  // namespace blimp