Revert "Replacing TrySync with Metadata"

runtime/vm/isolate.cc

Index: runtime/vm/isolate.cc
diff --git a/runtime/vm/isolate.cc b/runtime/vm/isolate.cc
index aa2caf2d4d7568f0cae66c98d39c358b39a7de1d..b473061aadc884ff94fc990da3ccb0d03c245284 100644
--- a/runtime/vm/isolate.cc
+++ b/runtime/vm/isolate.cc
@@ -769,12 +769,6 @@ void BaseIsolate::AssertCurrentThreadIsMutator() const {
 
 #define REUSABLE_HANDLE_INITIALIZERS(object) object##_handle_(NULL),
 
-
-static void FreeCatchEntryState(CatchEntryState* state) {
-  delete state->data;
-}
-
-
 // TODO(srdjan): Some Isolate monitors can be shared. Replace their usage with
 // that shared monitor.
 Isolate::Isolate(const Dart_IsolateFlags& api_flags)
@@ -852,8 +846,7 @@ Isolate::Isolate(const Dart_IsolateFlags& api_flags)
       reload_context_(NULL),
       last_reload_timestamp_(OS::GetCurrentTimeMillis()),
       should_pause_post_service_request_(false),
-      handler_info_cache_(),
-      catch_entry_state_cache_(FreeCatchEntryState) {
+      handler_info_cache_() {
   NOT_IN_PRODUCT(FlagsCopyFrom(api_flags));
   // TODO(asiva): A Thread is not available here, need to figure out
   // how the vm_tag (kEmbedderTagId) can be set, these tags need to