Fixed upgrade failures to only throw once not on each wrap_jso

tools/dom/templates/html/impl/impl_HTMLElement.darttemplate

Index: tools/dom/templates/html/impl/impl_HTMLElement.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_ServiceWorker.darttemplate b/tools/dom/templates/html/impl/impl_HTMLElement.darttemplate
similarity index 64%
copy from tools/dom/templates/html/impl/impl_ServiceWorker.darttemplate
copy to tools/dom/templates/html/impl/impl_HTMLElement.darttemplate
index 6cb64ab3ad1ad928fd763f04f48b6a51ba93373b..02dc375652421e175638ac087f33292901c366bc 100644
--- a/tools/dom/templates/html/impl/impl_ServiceWorker.darttemplate
+++ b/tools/dom/templates/html/impl/impl_HTMLElement.darttemplate
@@ -8,8 +8,10 @@ part of $LIBRARYNAME;
 $(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS {
 $!MEMBERS
 $if DARTIUM
-  // Override these methods for Dartium _ServiceWorker can't be abstract.
-  Stream<ErrorEvent> get onError => errorEvent.forTarget(this);
+  // Flags to only try upgrading once if there's a failure don't try upgrading
+  // anymore.
+  bool _badUpgrade = false;
+  bool get isBadUpgrade => _badUpgrade;
+  void badUpgrade() { _badUpgrade = true; }
 $endif
 }
-