Revert "content: Remove use of MessageLoopProxy and deprecated MessageLoop APIs"

content/browser/quota/quota_backend_impl_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 "storage/browser/fileapi/quota/quota_backend_impl.h"
 
 #include <string>
 
 #include "base/files/scoped_temp_dir.h"
-#include "base/thread_task_runner_handle.h"
+#include "base/message_loop/message_loop.h"
 #include "storage/browser/fileapi/file_system_usage_cache.h"
 #include "storage/browser/fileapi/obfuscated_file_util.h"
 #include "storage/browser/quota/quota_manager_proxy.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/leveldatabase/src/helpers/memenv/memenv.h"
 #include "third_party/leveldatabase/src/include/leveldb/env.h"
 
 using storage::FileSystemUsageCache;
 using storage::ObfuscatedFileUtil;
 using storage::QuotaBackendImpl;
@@ skipping 101 matching lines @@
     base::File::Error error = base::File::FILE_ERROR_FAILED;
     base::FilePath path = file_util_->GetDirectoryForOriginAndType(
         origin, type_string, true /* create */, &error);
     ASSERT_EQ(base::File::FILE_OK, error);
 
     ASSERT_TRUE(file_system_usage_cache_.UpdateUsage(
         GetUsageCachePath(origin, type), 0));
   }
 
   base::SequencedTaskRunner* file_task_runner() {
-    return base::ThreadTaskRunnerHandle::Get().get();
+    return base::MessageLoopProxy::current().get();
   }
 
   base::FilePath GetUsageCachePath(const GURL& origin,
                                    storage::FileSystemType type) {
     base::FilePath path;
     base::File::Error error =
         backend_->GetUsageCachePath(origin, type, &path);
     EXPECT_EQ(base::File::FILE_OK, error);
     EXPECT_FALSE(path.empty());
     return path;
@@ skipping 119 matching lines @@
   uint32 dirty = 0;
   ASSERT_TRUE(file_system_usage_cache_.GetDirty(path, &dirty));
   EXPECT_EQ(1u, dirty);
 
   backend_->DecrementDirtyCount(GURL(kOrigin), type);
   ASSERT_TRUE(file_system_usage_cache_.GetDirty(path, &dirty));
   EXPECT_EQ(0u, dirty);
 }
 
 }  // namespace content