Construct a field trial to see if HIGH or MEDIUM memory model "works better"...

chrome/browser/browser_trial.h

+// Copyright (c) 2006-2008 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.
+
+// BrowserTrial contains methods specific to field trials (using FieldTrial
+// functionality) for browser tests.
+
+#ifndef CHROME_BROWSER_BROWSER_TRIAL_H_
+#define CHROME_BROWSER_BROWSER_TRIAL_H_
+
+#include "base/field_trial.h"
+
+// Currently we use this as a name space, to hold static shared constants which
+// define current and past trials.
+class BrowserTrial {
+ public:
+  static const wchar_t* kMemoryModelFieldTrial;
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BrowserTrial);
+};
+
+#endif  // CHROME_BROWSER_BROWSER_TRIAL_H_