Fix another case where scrollToMakeVisible was off.

Source/modules/accessibility/AXObject.cpp

 /*
  * Copyright (C) 2008, 2009, 2011 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.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 1109 matching lines @@
 {
     // Search up the parent chain until we find the first one that's scrollable.
     AXObject* scrollParent = parentObject();
     ScrollableArea* scrollableArea = 0;
     while (scrollParent) {
         scrollableArea = scrollParent->getScrollableAreaIfScrollable();
         if (scrollableArea)
             break;
         scrollParent = scrollParent->parentObject();
     }
-    if (!scrollableArea)
+    if (!scrollParent || !scrollableArea)
         return;
 
     IntRect objectRect = pixelSnappedIntRect(elementRect());
     IntPoint scrollPosition = scrollableArea->scrollPosition();
     IntRect scrollVisibleRect = scrollableArea->visibleContentRect();
 
+    // Convert the object rect into local coordinates.
+    if (!scrollParent->isAXScrollView()) {
+        objectRect.moveBy(scrollPosition);
+        objectRect.moveBy(-pixelSnappedIntRect(scrollParent->elementRect()).location());
+    }
+
     int desiredX = computeBestScrollOffset(
         scrollPosition.x(),
         objectRect.x() + subfocus.x(), objectRect.x() + subfocus.maxX(),
         objectRect.x(), objectRect.maxX(),
         0, scrollVisibleRect.width());
     int desiredY = computeBestScrollOffset(
         scrollPosition.y(),
         objectRect.y() + subfocus.y(), objectRect.y() + subfocus.maxY(),
         objectRect.y(), objectRect.maxY(),
         0, scrollVisibleRect.height());
@@ skipping 208 matching lines @@
 }
 
 const AtomicString& AXObject::internalRoleName(AccessibilityRole role)
 {
     static const Vector<AtomicString>* internalRoleNameVector = createInternalRoleNameVector();
 
     return internalRoleNameVector->at(role);
 }
 
 } // namespace blink