Renamed enum constants per Chrome coding guide

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 b283df3a50aa18d09b78149e54c6c5505423a469..1fda8527d545d53da810059578d65cb7fa20d2b8 100644
--- a/chrome/browser/bookmarks/enhanced_bookmarks_features.h
+++ b/chrome/browser/bookmarks/enhanced_bookmarks_features.h
@@ -15,14 +15,14 @@ class PrefService;
 // sync_driver::prefs::kEnhancedBookmarksExperimentEnabled user preference and
 // used for UMA reporting as well.
 enum BookmarksExperimentState {
-  kNoBookmarksExperiment,
-  kBookmarksExperimentEnabled,
-  kBookmarksExperimentEnabledUserOptOut,
-  kBookmarksExperimentEnabledFromFinch,
-  kBookmarksExperimentOptOutFromFinch,
-  kBookmarksExperimentEnabledFromFinchUserSignedIn,
-  kBookmarksExperimentEnabledFromSyncUnknown,
-  kBookmarksExperimentEnumSize
+  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