Use ScopedTaskEnvironment instead of MessageLoop in content unit tests.

content/browser/android/url_request_content_job_unittest.cc

 // Copyright 2014 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/android/url_request_content_job.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
 
 #include "base/files/file_util.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
+#include "base/test/scoped_task_environment.h"
 #include "base/test/test_file_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 namespace {
 
@@ skipping 84 matching lines @@
   URLRequestContentJobTest();
 
  protected:
   // This inserts an image file into the android MediaStore and retrieves the
   // content URI. Then creates and runs a URLRequestContentJob to get the
   // contents out of it. If a Range is provided, this function will add the
   // appropriate Range http header to the request and verify the bytes
   // retrieved.
   void RunRequest(const Range* range);
 
-  base::MessageLoop message_loop_;
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
   JobObserverImpl observer_;
   net::TestURLRequestContext context_;
   net::TestDelegate delegate_;
 };
 
 URLRequestContentJobTest::URLRequestContentJobTest() {}
 
 void URLRequestContentJobTest::RunRequest(const Range* range) {
   base::FilePath test_dir;
   PathService::Get(base::DIR_SOURCE_ROOT, &test_dir);
@@ skipping 58 matching lines @@
 }
 
 TEST_F(URLRequestContentJobTest, ContentURIWithZeroRange) {
   Range range(0, 0);
   RunRequest(&range);
 }
 
 }  // namespace
 
 }  // namespace content