[Sync:USS] Enable USS bookmarks by default

Bug: 516866
Change-Id: I0dac03563ad4d5e620131f8fa10d337071754313
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1240303Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
Cr-Commit-Position: refs/heads/master@{#679908}

components/sync/driver/sync_driver_switches.cc

@@ -65,7 +65,7 @@ const base::Feature kSyncSupportSecondaryAccount{
 
 // Enable USS implementation of Bookmarks datatype.
 const base::Feature kSyncUSSBookmarks{"SyncUSSBookmarks",
-                                      base::FEATURE_DISABLED_BY_DEFAULT};
+                                      base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enable USS implementation of Passwords datatype.
 const base::Feature kSyncUSSPasswords{"SyncUSSPasswords",