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// Copyright 2013 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_BOOKMARKS_ENHANCED_BOOKMARKS_FEATURES_H_
#define CHROME_BROWSER_BOOKMARKS_ENHANCED_BOOKMARKS_FEATURES_H_
#include <string>
#include "extensions/common/extension.h"
namespace about_flags {
class FlagsStorage;
} // namespace about_flags
class PrefService;
class Profile;
// States for bookmark experiment. They are set by Chrome sync into
// sync_driver::prefs::kEnhancedBookmarksExperimentEnabled user preference and
// used for UMA reporting as well.
enum BookmarksExperimentState {
BOOKMARKS_EXPERIMENT_NONE,
BOOKMARKS_EXPERIMENT_ENABLED,
BOOKMARKS_EXPERIMENT_ENABLED_USER_OPT_OUT,
BOOKMARKS_EXPERIMENT_ENABLED_FROM_FINCH,
BOOKMARKS_EXPERIMENT_OPT_OUT_FROM_FINCH,
BOOKMARKS_EXPERIMENT_ENABLED_FROM_FINCH_USER_SIGNEDIN,
BOOKMARKS_EXPERIMENT_ENABLED_FROM_SYNC_UNKNOWN,
BOOKMARKS_EXPERIMENT_ENUM_SIZE
};
// Returns true and sets |extension_id| if bookmarks experiment enabled
// false if no bookmark experiment or extension id is empty.
bool GetBookmarksExperimentExtensionID(const PrefService* user_prefs,
std::string* extension_id);
// Updates bookmark experiment state based on information from Chrome sync,
// Finch experiments, and command line flag.
void UpdateBookmarksExperimentState(
PrefService* user_prefs,
PrefService* local_state,
bool user_signed_in,
BookmarksExperimentState experiment_enabled_from_sync);
// Same as UpdateBookmarksExperimentState, but the last argument with
// BOOKMARKS_EXPERIMENT_ENABLED_FROM_SYNC_UNKNOWN.
// Intended for performing initial configuration of bookmarks experiments
// when the browser is first initialized.
void InitBookmarksExperimentState(Profile* profile);
// Sets flag to opt-in user into Finch experiment.
void ForceFinchBookmarkExperimentIfNeeded(
PrefService* local_state,
BookmarksExperimentState bookmarks_experiment_state);
// Returns true if enhanced bookmarks experiment is running.
// Experiment could run by Chrome sync or by Finch.
// Note that this doesn't necessarily mean that enhanced bookmarks
// is enabled, e.g., user can opt out using a flag.
bool IsEnhancedBookmarksExperimentEnabled(
about_flags::FlagsStorage* flags_storage);
#if defined(OS_ANDROID)
// Returns true if enhanced bookmark salient image prefetching is enabled.
// This can be controlled by field trial.
bool IsEnhancedBookmarkImageFetchingEnabled(const PrefService* user_prefs);
// Returns true if enhanced bookmarks is enabled.
bool IsEnhancedBookmarksEnabled(const PrefService* user_prefs);
#endif
// Returns true when flag enable-dom-distiller is set or enabled from Finch.
bool IsEnableDomDistillerSet();
// Returns true when flag enable-sync-articles is set or enabled from Finch.
bool IsEnableSyncArticlesSet();
#endif // CHROME_BROWSER_BOOKMARKS_ENHANCED_BOOKMARKS_FEATURES_H_
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