chrome/browser/chrome_browser_field_trials.h

   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 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 CommandLine& parsed_command_line_;
  28
  29   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserFieldTrials);
  30 };
  31
  32 #endif  // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_