Use ScopedTaskEnvironment instead of MessageLoop in tests that use v8.

content/public/test/render_view_test.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_TEST_RENDER_VIEW_TEST_H_
 #define CONTENT_PUBLIC_TEST_RENDER_VIEW_TEST_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "base/command_line.h"
-#include "base/message_loop/message_loop.h"
 #include "base/strings/string16.h"
+#include "base/test/scoped_task_environment.h"
 #include "base/test/test_io_thread.h"
 #include "build/build_config.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/common/main_function_params.h"
 #include "content/public/common/page_state.h"
 #include "content/public/test/mock_render_thread.h"
 #include "mojo/edk/embedder/scoped_ipc_support.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/Platform.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
@@ skipping 157 matching lines @@
   virtual std::unique_ptr<ResizeParams> InitialSizeParams();
 
   // testing::Test
   void SetUp() override;
 
   void TearDown() override;
 
   // blink::WebLeakDetectorClient implementation.
   void OnLeakDetectionComplete(const Result& result) override;
 
-  base::MessageLoop msg_loop_;
+ protected:
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
+
   std::unique_ptr<FakeCompositorDependencies> compositor_deps_;
   std::unique_ptr<MockRenderProcess> mock_process_;
   // We use a naked pointer because we don't want to expose RenderViewImpl in
   // the embedder's namespace.
   RenderView* view_;
   RendererBlinkPlatformImplTestOverride blink_platform_impl_;
   std::unique_ptr<ContentClient> content_client_;
   std::unique_ptr<ContentBrowserClient> content_browser_client_;
   std::unique_ptr<ContentRendererClient> content_renderer_client_;
   std::unique_ptr<MockRenderThread> render_thread_;
@@ skipping 12 matching lines @@
   std::unique_ptr<base::mac::ScopedNSAutoreleasePool> autorelease_pool_;
 #endif
 
  private:
   void GoToOffset(int offset, const GURL& url, const PageState& state);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_RENDER_VIEW_TEST_H_