Implement A/B experiment for anti-DDoS.

chrome/browser/trials/throttling_trial.h

Index: chrome/browser/trials/throttling_trial.h
diff --git a/chrome/browser/trials/throttling_trial.h b/chrome/browser/trials/throttling_trial.h
new file mode 100644
index 0000000000000000000000000000000000000000..bbea7d4586f0ce022eb847b5144220f1f7ab60a9
--- /dev/null
+++ b/chrome/browser/trials/throttling_trial.h
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+// Copyright (c) 2011 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 CHROME_BROWSER_TRIALS_THROTTLING_TRIAL_H_
+#define CHROME_BROWSER_TRIALS_THROTTLING_TRIAL_H_
+#pragma once
+
+#include <string>
+
+class PrefService;
+
+namespace throttling_trial {
+
+// Creates the trial.
+void CreateTrial(PrefService* prefs);
+
+}  // namespace throttling_trial
+
+#endif  // CHROME_BROWSER_TRIALS_THROTTLING_TRIAL_H_