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* Added a SetForced method to allow forcing a new set of group bucketting.mad@chromium.org2012-05-071-0/+32
| | | | | | | | | | | | | | This will be needed by the Finch client (soon to be known as the Variations Service) that will get updated information about FieldTrials and pre-feed the field trial list based on this information. So this is different from CreateFieldTrial, which forced a group choice, this new method allows forcing a new set of appended groups. BUG=121695 TEST=build\Debug\base_unittests.exe --gtest_filter=FieldTrialTest.SetForced Review URL: https://chromiumcodereview.appspot.com/10382018 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@135748 0039d316-1c4b-4281-b951-d872f2087c98
* Remove the hash fields from FieldTrials.stevet@chromium.org2012-04-271-45/+18
| | | | | | | | | | | | | | We want to migrate the hash fields and related methods from FieldTrials over to experiments_helper. We've also updated the unit tests that accomodate these changes. We've also refactored the experiments_helper APIs for GoogleExperimentIDs to take strings instead of NameGroupIds as keys... we do the hashing internally instead. BUG=None TEST=Ensure that base_unittests FieldTrialTest.* all pass. Ensure that unit_tests ExperimentsHelperTest.* all pass. Review URL: http://codereview.chromium.org/10151017 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@134350 0039d316-1c4b-4281-b951-d872f2087c98
* Field Trials choices can now be forced from a command line argument, and yet ↵mad@chromium.org2012-04-121-53/+100
| | | | | | | | | | | | | | | | | still behave as if a coin was tossed, except the coin is tricked :-). To do this, we needed to change the usage from a regular constructor (which is not private) to a static CreateInstance method (which is why there is a bunch of TBR'd owners, those changes were trivial to existing users of FieldTrials). OWNERs of trivially changed files: TBR=sky,jamesr,cpu,joi, BUG=119726 TEST=base_unittests.exe --gtest_filter=FieldTrialTest.* You can also find an active field trial name and force it to a given group by passing the following command line argument "--force-fieldtest=<trial_name>/<default_group_name>/<group_name>/" Review URL: http://codereview.chromium.org/9705074 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@131948 0039d316-1c4b-4281-b951-d872f2087c98
* Need the unsigned constants marked as unsigned.backer@chromium.org2012-01-271-9/+9
| | | | | | | | | | TBR=mad BUG=none TEST=linux bot compiles without warning Review URL: https://chromiumcodereview.appspot.com/9296008 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@119451 0039d316-1c4b-4281-b951-d872f2087c98
* Added a Unique ID for a Field Trial containing it's hashed name and the ↵mad@chromium.org2012-01-271-0/+70
| | | | | | | | | | | | selected group ID. Also returns the list of UIDs of all currently running Field Trials BUG=None TEST=FieldTrialTest.UIDs Review URL: https://chromiumcodereview.appspot.com/9117037 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@119444 0039d316-1c4b-4281-b951-d872f2087c98
* Remove Purify and Quantify.Doing so will reduce substantially the size of ↵jeanluc@chromium.org2011-08-171-1/+1
| | | | | | | | | the project files. BUG=92102 Review URL: http://codereview.chromium.org/7528010 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@97156 0039d316-1c4b-4281-b951-d872f2087c98
* Add one-time randomization support for FieldTrial, and the ability tojoi@chromium.org2011-05-101-7/+118
| | | | | | | | | | | | | | | | | | | | | | | disable field trials. I am going to have a need for both soon. Update some documentation about empty trial names, add TrialExists() method and update many call-sites to use this (it simplifies the previous logic which checked for existence and then for non-empty name, which can no longer happen). Refactor a bit in browser_main. While I'm in there and needing base/OWNERS approval, add an OWNERS file for base/metrics that adds jar@chromium.org as an owner for that directory. Initially committed as r84197. Rolled back due to DCHECK in official builds, r84373. Will re-submit with fix. BUG=81750 TEST=base_unittests Review URL: http://codereview.chromium.org/6883102 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@84801 0039d316-1c4b-4281-b951-d872f2087c98
* Revert 84197 - Add one-time randomization support for FieldTrial, and the ↵joi@chromium.org2011-05-061-118/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | ability to disable field trials. I am going to have a need for both soon. Cleaning up some comments about empty trial names, adding static method TrialExists() and simplifying many call sites by using this method. While I'm in there and needing base/OWNERS approval, add an OWNERS file for base/metrics that adds jar@chromium.org as an owner for that directory. BUG=none TEST=base_unittests TBR=jam@chromium.org R=jar@chromium.org,phajdan.jr@chromium.org,mark@chromium.org,wtc@chromium.org Reason for revert: See http://crbug.com/81750 BUG=81750 TBR=joi@chromium.org Review URL: http://codereview.chromium.org/6931048 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@84373 0039d316-1c4b-4281-b951-d872f2087c98
* Add one-time randomization support for FieldTrial, and the ability tojoi@chromium.org2011-05-051-7/+118
| | | | | | | | | | | | | | | | | | disable field trials. I am going to have a need for both soon. Cleaning up some comments about empty trial names, adding static method TrialExists() and simplifying many call sites by using this method. While I'm in there and needing base/OWNERS approval, add an OWNERS file for base/metrics that adds jar@chromium.org as an owner for that directory. BUG=none TEST=base_unittests TBR=jam@chromium.org git-svn-id: svn://svn.chromium.org/chrome/trunk/src@84197 0039d316-1c4b-4281-b951-d872f2087c98
* Field trials are currently implemented (commonly) using a static variable ↵rtenneti@chromium.org2011-04-291-1/+27
| | | | | | | | | | | | | | | | | | | | that is set once, the first time it is necessary to decide if there is an experiment by a given name active. With this change the field-test system can "push" a group that is selected for the given field trial (field test) if/when an experiment does arrive. This change implements a simple IPC notification of the result of a FieldTrial setting being sent to any previously started renderers. BUG=16494 TEST=field trial tests R=jar Review URL: http://codereview.chromium.org/6883029 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@83488 0039d316-1c4b-4281-b951-d872f2087c98
* .c Feature to disable field trials in old versions of Chromium. Field trialsrtenneti@chromium.org2011-01-191-33/+98
| | | | | | | | | | | | | | tests are (usually) monitored for a fixed length of time. With this change field trial tests turn them selves off (will use the default group) after the expiration time (specified in the Field Trial constructor). BUG=13463 TEST=field_trial_unittests tests this code thorougly. spdy session and testing field_trials in renderer process would be very helpful. thanks much. Review URL: http://codereview.chromium.org/6317004 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71820 0039d316-1c4b-4281-b951-d872f2087c98
* Convert implicit scoped_refptr constructor calls to explicit ones, part 1thakis@chromium.org2010-11-011-1/+1
| | | | | | | | | | | This CL was created automatically by this clang rewriter: http://codereview.appspot.com/2776043/ . I manually fixed a few rough spots of the rewriter output (doh1-3) and fixed all presubmit errors. BUG=28083 TEST=None Review URL: http://codereview.chromium.org/4192012 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@64573 0039d316-1c4b-4281-b951-d872f2087c98
* Move Stats, histograms, and field trial into a metrics subdirectory of base andbrettw@chromium.org2010-10-141-0/+233
put them in the base namespace. TEST=it compiles BUG=none git-svn-id: svn://svn.chromium.org/chrome/trunk/src@62510 0039d316-1c4b-4281-b951-d872f2087c98
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