[Android] Add enhanced bookmark opt-in flag.

chrome/browser/bookmarks/enhanced_bookmarks_features.h

Index: chrome/browser/bookmarks/enhanced_bookmarks_features.h
diff --git a/chrome/browser/bookmarks/enhanced_bookmarks_features.h b/chrome/browser/bookmarks/enhanced_bookmarks_features.h
index a8ee358b7150aede6febbaf9019414da5134fe42..75c1408de34b7ed399d681bb98e39fd3c886c558 100644
--- a/chrome/browser/bookmarks/enhanced_bookmarks_features.h
+++ b/chrome/browser/bookmarks/enhanced_bookmarks_features.h
@@ -10,6 +10,7 @@
 #include "extensions/common/extension.h"
 
 class PrefService;
+class Profile;
 
 // States for bookmark experiment. They are set by Chrome sync into
 // sync_driver::prefs::kEnhancedBookmarksExperimentEnabled user preference and
@@ -31,13 +32,17 @@ bool GetBookmarksExperimentExtensionID(const PrefService* user_prefs,
                                        std::string* extension_id);
 
 // Updates bookmark experiment state based on information from Chrome sync
-// and Finch experiments.
+// , Finch experiments, and command line flag.

[Yaron, 2014/09/08 23:19:58]

leading "," on previous line

[Kibeom Kim (inactive), 2014/09/09 00:32:22]

Done.

 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.

[Yaron, 2014/09/08 23:19:58]

You could add: "Intended for performing initial configuration of bookmarks
experiments when the browser is first initialized."

[Kibeom Kim (inactive), 2014/09/09 00:32:22]

Done.

+void InitBookmarksExperimentState(Profile* profile);
+
 // Sets flag to opt-in user into Finch experiment.
 void ForceFinchBookmarkExperimentIfNeeded(
     PrefService* local_state,