1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ 6#define CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ 7 8#include "base/basictypes.h" 9#include "base/command_line.h" 10 11class PrefService; 12 13namespace base { 14class Time; 15} 16 17class ChromeBrowserFieldTrials { 18 public: 19 explicit ChromeBrowserFieldTrials(const base::CommandLine& command_line); 20 ~ChromeBrowserFieldTrials(); 21 22 // Called by the browser main sequence to set up Field Trials for this client. 23 // |local_state| is used to set browser-wide properties. 24 void SetupFieldTrials(const base::Time& install_time, 25 PrefService* local_state); 26 27 private: 28 // Instantiates dynamic trials by querying their state, to ensure they get 29 // reported as used. 30 void InstantiateDynamicTrials(); 31 32 const base::CommandLine& parsed_command_line_; 33 34 DISALLOW_COPY_AND_ASSIGN(ChromeBrowserFieldTrials); 35}; 36 37#endif // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ 38