Added shim for scrollX and scrollY for IE 9.

sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index 516c4162b821e180dccdff851b8033982d06c497..5a33fbdeb404ce9df21bd82ec1f85511ac1fae97 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -25807,11 +25807,11 @@ class Window extends EventTarget implements WindowBase, WindowTimers {
 
   @DomName('Window.scrollX')
   @DocsEditable()
-  int get scrollX native "Window_scrollX_Getter";
+  int get $dom_scrollX native "Window_scrollX_Getter";
 
   @DomName('Window.scrollY')
   @DocsEditable()
-  int get scrollY native "Window_scrollY_Getter";
+  int get $dom_scrollY native "Window_scrollY_Getter";

[blois, 2013/07/26 00:36:23]

Change should be dart2js only via _js_custom_members. These APIs are dropped
from Dartium.

 
   @DomName('Window.scrollbars')
   @DocsEditable()
@@ -26320,6 +26320,7 @@ class Window extends EventTarget implements WindowBase, WindowTimers {
   void moveTo(Point p) {
     $dom_moveTo(p.x, p.y);
   }
+
 }
 
 /**