"Reverting 24655"

tools/dom/scripts/systemhtml.py

Index: tools/dom/scripts/systemhtml.py
diff --git a/tools/dom/scripts/systemhtml.py b/tools/dom/scripts/systemhtml.py
index 466b0f104e176f5ec5f996e476f8e6d947da71bf..04e491d95d330c2a376d4e602fd53464e428aadb 100644
--- a/tools/dom/scripts/systemhtml.py
+++ b/tools/dom/scripts/systemhtml.py
@@ -58,9 +58,6 @@ _js_custom_members = monitored.Set('systemhtml._js_custom_members', [
     'DOMException.name',
     'HTMLTableElement.createTBody',
     'IDBDatabase.transaction',
-    'IDBDatabase.transactionList',
-    'IDBDatabase.transactionStore',
-    'IDBDatabase.transactionStores',
     'KeyboardEvent.initKeyboardEvent',
     'Location.origin',
     'MouseEvent.offsetX',
@@ -69,9 +66,6 @@ _js_custom_members = monitored.Set('systemhtml._js_custom_members', [
     'Navigator.webkitGetUserMedia',
     'ScriptProcessorNode._setEventListener',
     'URL.createObjectURL',
-    'URL.createObjectUrlFromSource',
-    'URL.createObjectUrlFromStream',
-    'URL.createObjectUrlFromBlob',
     'URL.revokeObjectURL',
     'WheelEvent.deltaMode',
     'WheelEvent.wheelDeltaX',
@@ -966,8 +960,7 @@ class Dart2JSBackend(HtmlDartGenerator):
 
     def GenerateCall(
         stmts_emitter, call_emitter, version, operation, argument_count):
-      target = '_%s_%d' % (
-          html_name[1:] if html_name.startswith('_') else html_name, version);
+      target = '_%s_%d' % (html_name, version);
       arguments = []
       target_parameters = []
       for position, arg in enumerate(operation.arguments[:argument_count]):