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 11 class PrefService; 12 13 class ChromeBrowserFieldTrials { 14 public: 15 explicit ChromeBrowserFieldTrials(const base::CommandLine& command_line); 16 ~ChromeBrowserFieldTrials(); 17 18 // Called by the browser main sequence to set up Field Trials for this client. 19 // |local_state| is used to extract properties like install time. 20 void SetupFieldTrials(PrefService* local_state); 21 22 private: 23 // Instantiates dynamic trials by querying their state, to ensure they get 24 // reported as used. 25 void InstantiateDynamicTrials(); 26 27 const base::CommandLine& parsed_command_line_; 28 29 DISALLOW_COPY_AND_ASSIGN(ChromeBrowserFieldTrials); 30 }; 31 32 #endif // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ 33