Finch experiment for limiting the password bubble annoyance.

chrome/browser/ui/passwords/password_bubble_experiment.h

+// Copyright 2014 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_UI_PASSWORDS_PASSWORD_BUBBLE_EXPERIMENT_H_
+#define CHROME_BROWSER_UI_PASSWORDS_PASSWORD_BUBBLE_EXPERIMENT_H_
+
+#include "base/macros.h"
+#include "components/password_manager/core/browser/password_manager_metrics_util.h"
+
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
+class PrefService;
+
+// These functions handle the algorithms according to which the "Save password?"
+// bubble is shown to user.
+namespace password_bubble_experiment {
+
+void RegisterPrefs(user_prefs::PrefRegistrySyncable* registry);
+
+// The decision is made based on the "PasswordBubbleAlgorithm" finch experiment.
+// The default value is true.
+// It should be called before showing the "Save Password?" dialog.
+bool ShouldShowBubble(PrefService* prefs);
+
+// Should be called when user dismisses the "Save Password?" dialog. It stores
+// the statistics about interactions with the bubble.
+void RecordBubbleClosed(
+    PrefService* prefs,
+    password_manager::metrics_util::UIDismissalReason reason);
+
+// The name of the finch experiment controlling the algorithm.
+extern const char kExperimentName[];
+
+// The group name for the time based algorithm.
+extern const char kGroupTimeSpanBased[];
+
+// The group name for the probability algorithm.
+extern const char kGroupProbabilityBased[];
+
+// For "Probability" group. The additional "Saves" to be added to the model.
+extern const char kParamProbabilityFakeSaves[];
+
+// For "Probability" group. The interaction history length.
+extern const char kParamProbabilityInteractionsCount[];
+
+// For "TimeSpan" group. The time span until the nope counter is zeroed.
+extern const char kParamTimeSpan[];
+
+// For "TimeSpan" group. The nopes threshold.
+extern const char kParamTimeSpanNopeThreshold[];
+
+}  // namespace password_bubble_experiment
+
+#endif  // CHROME_BROWSER_UI_PASSWORDS_PASSWORD_BUBBLE_EXPERIMENT_H_