Getting html_dart2js and html_dartium a bit more in sync.

tools/dom/templates/html/dart2js/impl_Console.darttemplate

Index: tools/dom/templates/html/dart2js/impl_Console.darttemplate
diff --git a/tools/dom/templates/html/dart2js/impl_Console.darttemplate b/tools/dom/templates/html/dart2js/impl_Console.darttemplate
index 25d08e109832ec4e1113e83bcdc1a82c1541d7fb..84527d2bc69146524b3b9a559b719fd5acfffd6c 100644
--- a/tools/dom/templates/html/dart2js/impl_Console.darttemplate
+++ b/tools/dom/templates/html/dart2js/impl_Console.darttemplate
@@ -6,7 +6,7 @@ part of $LIBRARYNAME;
 
 $(ANNOTATIONS)class Console {
 
-  static Console safeConsole = new Console();
+  static Console _safeConsole = new Console();
 
   bool get _isConsoleDefined => JS('bool', 'typeof console != "undefined"');
 
@@ -79,8 +79,8 @@ $(ANNOTATIONS)class Console {
       JS('void', 'console.time(#)', title) : null;
 
   @DomName('Console.timeEnd')
-  void timeEnd(String timerName) => _isConsoleDefined ?
-      JS('void', 'console.timeEnd(#)', timerName) : null;
+  void timeEnd(String title) => _isConsoleDefined ?
+      JS('void', 'console.timeEnd(#)', title) : null;
 
   @DomName('Console.timeStamp')
   void timeStamp(Object arg) => _isConsoleDefined ?