Use ScopedTaskEnvironment instead of MessageLoop in content unit tests.

content/browser/appcache/appcache_service_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 <stdint.h>
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/pickle.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
+#include "base/test/scoped_task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/browser/appcache/appcache_response.h"
 #include "content/browser/appcache/appcache_service_impl.h"
 #include "content/browser/appcache/mock_appcache_storage.h"
 #include "net/base/completion_callback.h"
 #include "net/base/io_buffer.h"
 #include "net/http/http_response_headers.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
@@ skipping 155 matching lines @@
 
   const GURL kOrigin;
   const GURL kManifestUrl;
 
   std::unique_ptr<AppCacheServiceImpl> service_;
   int delete_result_;
   int delete_completion_count_;
   net::CompletionCallback deletion_callback_;
 
  private:
-  base::MessageLoop message_loop_;
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
 };
 
 TEST_F(AppCacheServiceImplTest, DeleteAppCachesForOrigin) {
   // Without giving mock storage simiulated info, should fail.
   service_->DeleteAppCachesForOrigin(kOrigin, deletion_callback_);
   EXPECT_EQ(0, delete_completion_count_);
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(1, delete_completion_count_);
   EXPECT_EQ(net::ERR_FAILED, delete_result_);
   delete_completion_count_ = 0;
@@ skipping 177 matching lines @@
   EXPECT_EQ(kOneHour, service->reinit_timer_.GetCurrentDelay());
   EXPECT_EQ(kOneHour, service->next_reinit_delay_);
 
   // Fine to delete while pending.
   service.reset(NULL);
 }
 
 
 
 }  // namespace content