Delete the auto-launch trial.

chrome/browser/auto_launch_trial.h

-// Copyright (c) 2011 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.
-
-#ifndef CHROME_BROWSER_AUTO_LAUNCH_TRIAL_H_
-#define CHROME_BROWSER_AUTO_LAUNCH_TRIAL_H_
-
-#include <string>
-
-// Strings used with the "auto launching Chrome at computer startup" trial.  If
-// the field trial is running then...
-// base::FieldTrialList::TrialExists(kAutoLaunchTrial_Name) returns true.
-//
-// The field trial consists of two groups of users: those that auto-launch
-// Chrome at startup and those that don't.  The group_name() of the field
-// trial object is used to determine the group that the user belongs to.
-//
-// The field trial is setup in ChromeBrowserMainParts::AutoLaunchFieldTrial()
-// based on the user's brand code:
-//
-//   - brand RNGP auto launches Chrome on computer startup.
-//   - brand RNGQ does not.

[Finnur, 2015/11/11 09:55:53]

I don't know if we still send out these builds, but can you double check with
someone to see if we need to notify someone that we should not be sending out
branded builds, expecting this brand code to do something?

[gab, 2015/11/11 21:30:02]

I sent a notification to chrome-ui-review and to arnoldkim (who's listed as
owner of that brand in google3), no one seems to care so far (and given the
*extremely low* UMA numbers for foreground auto-launch -- ref. issue 553790 and
follow-up CL https://codereview.chromium.org/1439803002/ -- I highly doubt
anyone is using this).

-//   - any other brand code does whatever comes natural to it.
-
-extern const char kAutoLaunchTrialName[];
-extern const char kAutoLaunchTrialAutoLaunchGroup[];
-extern const char kAutoLaunchTrialControlGroup[];
-
-namespace auto_launch_trial {
-
-// The possible responses for the auto-launch infobar.
-enum InfobarMetricResponse {
-  INFOBAR_CUT_IT_OUT = 0,
-  INFOBAR_OK,
-  INFOBAR_IGNORE,
-};
-
-// Whether the auto-launch experiment is active and the user is part of it.
-bool IsInAutoLaunchGroup();
-
-// Whether the brand is part of the experiment group for auto-launch.
-bool IsInExperimentGroup(const std::string& brand_code);
-
-// Whether the brand is part of the control group for auto-launch.
-bool IsInControlGroup(const std::string& brand_code);
-
-}  // namespace auto_launch_trial
-
-#endif  // CHROME_BROWSER_AUTO_LAUNCH_TRIAL_H_