Use ScopedTaskEnvironment instead of MessageLoop in content unit tests.

content/browser/quota/mock_quota_manager_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/quota/mock_quota_manager.h"
 
 #include <memory>
 #include <set>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
+#include "base/test/scoped_task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/public/test/mock_special_storage_policy.h"
 #include "content/public/test/mock_storage_client.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using storage::kQuotaStatusOk;
 using storage::kStorageTypePersistent;
 using storage::kStorageTypeTemporary;
 
 namespace content {
@@ skipping 69 matching lines @@
 
   const std::set<GURL>& origins() const {
     return origins_;
   }
 
   const StorageType& type() const {
     return type_;
   }
 
  private:
-  base::MessageLoop message_loop_;
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
   base::ScopedTempDir data_dir_;
   scoped_refptr<MockQuotaManager> manager_;
   scoped_refptr<MockSpecialStoragePolicy> policy_;
 
   int deletion_callback_count_;
 
   std::set<GURL> origins_;
   StorageType type_;
 
   base::WeakPtrFactory<MockQuotaManagerTest> weak_factory_;
@@ skipping 103 matching lines @@
 
   GetModifiedOrigins(kTemporary, now - a_minute);
   base::RunLoop().RunUntilIdle();
 
   EXPECT_EQ(kTemporary, type());
   EXPECT_EQ(1UL, origins().size());
   EXPECT_EQ(0UL, origins().count(kOrigin1));
   EXPECT_EQ(1UL, origins().count(kOrigin2));
 }
 }  // namespace content