Implement an AutoLaunch experiment for Chrome for certain brand codes.

chrome/browser/auto_launch_trial.cc

+// 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.
+
+#include "chrome/browser/auto_launch_trial.h"
+
+#include "base/metrics/field_trial.h"
+#include "base/metrics/histogram.h"
+
+const char kAutoLaunchTrial_Name[] = "AutoLaunchExperiment";
+const char kAutoLaunchTrial_AutoLaunchGroup[] = "AutoLaunching";
+const char kAutoLaunchTrial_ControlGroup[] = "NotAutoLaunching";
+
+namespace auto_launch_trial {
+
+bool IsInAutoLaunchGroup() {
+  return base::FieldTrialList::TrialExists(kAutoLaunchTrial_Name) &&
+         base::FieldTrialList::Find(kAutoLaunchTrial_Name)->group_name()
+             == kAutoLaunchTrial_AutoLaunchGroup;
+}

[Roger Tawa OOO till Jul 10th, 2011/12/07 15:38:37]

Shouldn't you also check the master prefs file here too?

[Finnur, 2011/12/13 15:53:24]

Done.

+
+void UpdateToggleAutoLaunchMetric(bool auto_launch) {
+  UMA_HISTOGRAM_ENUMERATION(
+      base::FieldTrial::MakeName("ToggleAutoLaunch", kAutoLaunchTrial_Name),
+      auto_launch ? 1 : 0, 2);
+}
+
+void UpdateInfobarResponseMetric(int response) {
+  UMA_HISTOGRAM_ENUMERATION(

[Roger Tawa OOO till Jul 10th, 2011/12/07 15:38:37]

assert response < 3 ?

[Finnur, 2011/12/13 15:53:24]

Converted to enum.

On 2011/12/07 15:38:37, Roger Tawa wrote:

+      base::FieldTrial::MakeName("InfobarRepsonse", kAutoLaunchTrial_Name),
+      response, 3);
+}
+
+void UpdateInfobarShownMetric() {
+  UMA_HISTOGRAM_COUNTS(
+      base::FieldTrial::MakeName("InfobarShown", kAutoLaunchTrial_Name), 1);
+}
+
+} // namespace auto_launch_trial