Enable bookmark sync metadata invalidation if mismatching guid by default.

Bug: 1032052
Change-Id: I55801e98e7729d2bba895272ea21ab285ec20cb9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2167282Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Rushan Suleymanov <rushans@google.com>
Cr-Commit-Position: refs/heads/master@{#765030}

components/sync_bookmarks/synced_bookmark_tracker.cc

@@ -30,7 +30,7 @@ namespace sync_bookmarks {
 
 const base::Feature kInvalidateBookmarkSyncMetadataIfMismatchingGuid{
     "InvalidateBookmarkSyncMetadataIfMismatchingGuid",
-    base::FEATURE_DISABLED_BY_DEFAULT};
+    base::FEATURE_ENABLED_BY_DEFAULT};
 
 extern const base::Feature kInvalidateBookmarkSyncMetadataIfClientTagDuplicates{
     "InvalidateBookmarkSyncMetadataIfClientTagDuplicates",