Don't force layout for mouse event hit tests

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 1056 matching lines @@
     return range->text();
 }
 
 PassRefPtr<DOMPoint> Internals::touchPositionAdjustedToBestClickableNode(long x, long y, long width, long height, Document* document, ExceptionCode& ec)
 {
     if (!document || !document->frame()) {
         ec = INVALID_ACCESS_ERR;
         return 0;
     }
 
+    document->updateLayout();
+
     IntSize radius(width / 2, height / 2);
     IntPoint point(x + radius.width(), y + radius.height());
 
     Node* targetNode;
     IntPoint adjustedPoint;
 
     bool foundNode = document->frame()->eventHandler()->bestClickableNodeForTouchPoint(point, radius, adjustedPoint, targetNode);
     if (foundNode)
         return DOMPoint::create(adjustedPoint.x(), adjustedPoint.y());
 
     return 0;
 }
 
 Node* Internals::touchNodeAdjustedToBestClickableNode(long x, long y, long width, long height, Document* document, ExceptionCode& ec)
 {
     if (!document || !document->frame()) {
         ec = INVALID_ACCESS_ERR;
         return 0;
     }
 
+    document->updateLayout();
+
     IntSize radius(width / 2, height / 2);
     IntPoint point(x + radius.width(), y + radius.height());
 
     Node* targetNode;
     IntPoint adjustedPoint;
     document->frame()->eventHandler()->bestClickableNodeForTouchPoint(point, radius, adjustedPoint, targetNode);
     return targetNode;
 }
 
 PassRefPtr<DOMPoint> Internals::touchPositionAdjustedToBestContextMenuNode(long x, long y, long width, long height, Document* document, ExceptionCode& ec)
 {
     if (!document || !document->frame()) {
         ec = INVALID_ACCESS_ERR;
         return 0;
     }
 
+    document->updateLayout();
+
     IntSize radius(width / 2, height / 2);
     IntPoint point(x + radius.width(), y + radius.height());
 
     Node* targetNode = 0;
     IntPoint adjustedPoint;
 
     bool foundNode = document->frame()->eventHandler()->bestContextMenuNodeForTouchPoint(point, radius, adjustedPoint, targetNode);
     if (foundNode)
         return DOMPoint::create(adjustedPoint.x(), adjustedPoint.y());
 
     return DOMPoint::create(x, y);
 }
 
 Node* Internals::touchNodeAdjustedToBestContextMenuNode(long x, long y, long width, long height, Document* document, ExceptionCode& ec)
 {
     if (!document || !document->frame()) {
         ec = INVALID_ACCESS_ERR;
         return 0;
     }
 
+    document->updateLayout();
+
     IntSize radius(width / 2, height / 2);
     IntPoint point(x + radius.width(), y + radius.height());
 
     Node* targetNode = 0;
     IntPoint adjustedPoint;
     document->frame()->eventHandler()->bestContextMenuNodeForTouchPoint(point, radius, adjustedPoint, targetNode);
     return targetNode;
 }
 
 PassRefPtr<ClientRect> Internals::bestZoomableAreaForTouchPoint(long x, long y, long width, long height, Document* document, ExceptionCode& ec)
 {
     if (!document || !document->frame()) {
         ec = INVALID_ACCESS_ERR;
         return 0;
     }
 
+    document->updateLayout();
+
     IntSize radius(width / 2, height / 2);
     IntPoint point(x + radius.width(), y + radius.height());
 
     Node* targetNode;
     IntRect zoomableArea;
     bool foundNode = document->frame()->eventHandler()->bestZoomableAreaForTouchPoint(point, radius, zoomableArea, targetNode);
     if (foundNode)
         return ClientRect::create(zoomableArea);
 
     return 0;
@@ skipping 765 matching lines @@
 
     RenderObject* renderer = select->renderer();
     if (!renderer->isMenuList())
         return false;
 
     RenderMenuList* menuList = toRenderMenuList(renderer);
     return menuList->popupIsVisible();
 }
 
 }