Fixed up signature for initKeyEvent vs initKeyboardEvent.

sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index 09f9f04a2c80669806c812e68ce538697551ddf3..3105b0c0a55d5fef0c8b187b89b051aba66a28b1 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -10890,13 +10890,20 @@ class KeyboardEvent extends UIEvent native "*KeyboardEvent" {
   void $dom_initKeyboardEvent(String type, bool canBubble, bool cancelable,
       LocalWindow view, String keyIdentifier, int keyLocation, bool ctrlKey,
       bool altKey, bool shiftKey, bool metaKey, bool altGraphKey) {
-    // initKeyEvent is the call in Firefox, initKeyboardEvent for all other
-    // browsers.
-    var function = JS('dynamic', '#.initKeyboardEvent || #.initKeyEvent', this,
-        this);
-    JS('void', '#(#, #, #, #, #, #, #, #, #, #, #)', function, type,
-        canBubble, cancelable, view, keyIdentifier, keyLocation, ctrlKey,
-        altKey, shiftKey, metaKey, altGraphKey);
+    if (JS('bool', 'typeof(#.initKeyEvent) == "function"', this)) {
+      // initKeyEvent is only in Firefox (instead of initKeyboardEvent). It has
+      // a slightly different signature, and allows you to specify keyCode and
+      // charCode as the last two arguments, but we just set them as the default
+      // since they can't be specified in other browsers.
+      JS('void', '#.initKeyEvent(#, #, #, #, #, #, #, #, 0, 0)', this,
+          type, canBubble, cancelable, view, 
+          ctrlKey, altKey, shiftKey, metaKey);
+    } else {
+      // initKeyboardEvent is for all other browsers.
+      JS('void', '#.initKeyboardEvent(#, #, #, #, #, #, #, #, #, #, #)', this,
+          type, canBubble, cancelable, view, keyIdentifier, keyLocation,
+          ctrlKey, altKey, shiftKey, metaKey, altGraphKey);
+    }
   }
 
   /** @domName KeyboardEvent.keyCode */
@@ -21950,7 +21957,7 @@ class KeyboardEventController {
   EventTarget _target;
 
   // The distance to shift from upper case alphabet Roman letters to lower case.
-  int _ROMAN_ALPHABET_OFFSET = "a".charCodes[0] - "A".charCodes[0];
+  final int _ROMAN_ALPHABET_OFFSET = "a".charCodes[0] - "A".charCodes[0];
 
   // Instance members referring to the internal event handlers because closures
   // are not hashable.