Partial fix to client breakage

client/touch/Scroller.dart

Index: client/touch/Scroller.dart
===================================================================
--- client/touch/Scroller.dart	(revision 1770)
+++ client/touch/Scroller.dart	(working copy)
@@ -134,13 +134,17 @@
   bool _activeGesture = false;
   ScrollWatcher _scrollWatcher;
 
-  Scroller(Element scrollableElem, [this.verticalEnabled = false,
-           this.horizontalEnabled = false,
-           this._momentumEnabled = true,
-           this._lookupContentSizeDelegate = null,
+  Scroller(Element scrollableElem, [verticalEnabled = false,
+           horizontalEnabled = false,
+           momentumEnabled = true,
+           lookupContentSizeDelegate = null,
            num defaultDecelerationFactor = 1,
            int scrollTechnique = null, bool capture = false])
-      : _element = scrollableElem,
+      : this.verticalEnabled = verticalEnabled,
+        this.horizontalEnabled = horizontalEnabled,
+        this._momentumEnabled = momentumEnabled,
+        this._lookupContentSizeDelegate = lookupContentSizeDelegate,
+        _element = scrollableElem,
         _frame = scrollableElem.parent,
         _scrollTechnique = scrollTechnique !== null
             ? scrollTechnique : ScrollerScrollTechnique.TRANSFORM_3D,