Remove enhanced bookmarks sync experiment

sync/internal_api/sync_manager_impl.cc

Index: sync/internal_api/sync_manager_impl.cc
diff --git a/sync/internal_api/sync_manager_impl.cc b/sync/internal_api/sync_manager_impl.cc
index 36c27ba8a8093e9799db3e27cb3ddbde9ac54f4b..c71b68ce4beaac6c6f1e923f190b2a583de74b00 100644
--- a/sync/internal_api/sync_manager_impl.cc
+++ b/sync/internal_api/sync_manager_impl.cc
@@ -970,23 +970,6 @@ bool SyncManagerImpl::ReceivedExperiment(Experiments* experiments) {
     // know about this.
   }
 
-  ReadNode enhanced_bookmarks_node(&trans);
-  if (enhanced_bookmarks_node.InitByClientTagLookup(
-          syncer::EXPERIMENTS, syncer::kEnhancedBookmarksTag) ==
-          BaseNode::INIT_OK &&
-      enhanced_bookmarks_node.GetExperimentsSpecifics()
-          .has_enhanced_bookmarks()) {
-    const sync_pb::EnhancedBookmarksFlags& enhanced_bookmarks =
-        enhanced_bookmarks_node.GetExperimentsSpecifics().enhanced_bookmarks();
-    if (enhanced_bookmarks.has_enabled())
-      experiments->enhanced_bookmarks_enabled = enhanced_bookmarks.enabled();
-    if (enhanced_bookmarks.has_extension_id()) {
-      experiments->enhanced_bookmarks_ext_id =
-          enhanced_bookmarks.extension_id();
-    }
-    found_experiment = true;
-  }
-
   ReadNode gcm_invalidations_node(&trans);
   if (gcm_invalidations_node.InitByClientTagLookup(
           syncer::EXPERIMENTS, syncer::kGCMInvalidationsTag) ==