Fix tests to avoid page scale reset when setting page scale.

LayoutTests/fast/frames/frame-set-scaling-hit.html

Index: LayoutTests/fast/frames/frame-set-scaling-hit.html
diff --git a/LayoutTests/fast/frames/frame-set-scaling-hit.html b/LayoutTests/fast/frames/frame-set-scaling-hit.html
index 5e28efeb94127863fe92a8384f616f00e36f2b8e..7be4730f27aa2abef99a17abe9125498bd935866 100644
--- a/LayoutTests/fast/frames/frame-set-scaling-hit.html
+++ b/LayoutTests/fast/frames/frame-set-scaling-hit.html
@@ -4,12 +4,12 @@
 
     <script>
         function init() {
-            if (!window.eventSender || !window.internals)
+            if (!window.eventSender)
                 return;
             // Scale the page and resize the frames to verify hit testing on the frameset
             var leftPanelWidth = window.innerWidth / 8;
             var panelHeight = window.innerHeight / 2;
-            window.internals.setPageScaleFactor(0.5, 0, 0);
+            eventSender.setPageScaleFactor(0.5, 0, 0);
             eventSender.mouseMoveTo(leftPanelWidth, panelHeight / 2);
             eventSender.mouseDown();
             eventSender.mouseMoveTo(2 * leftPanelWidth, panelHeight / 2);