Rename Document::ownerElement to localOwner and fix main frame checks.

third_party/WebKit/Source/core/layout/LayoutBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 525 matching lines @@
         parentBox = parent()->enclosingBox();
         restrictedByLineClamp = !parent()->style()->lineClamp().isNone();
     }
 
     if (hasOverflowClip() && !restrictedByLineClamp) {
         // Don't scroll to reveal an overflow layer that is restricted by the -webkit-line-clamp property.
         // This will prevent us from revealing text hidden by the slider in Safari RSS.
         newRect = getScrollableArea()->scrollIntoView(rect, alignX, alignY, scrollType);
     } else if (!parentBox && canBeProgramaticallyScrolled()) {
         if (FrameView* frameView = this->frameView()) {
-            HTMLFrameOwnerElement* ownerElement = document().ownerElement();
+            HTMLFrameOwnerElement* ownerElement = document().localOwner();
             if (!isDisallowedAutoscroll(ownerElement, frameView)) {
                 if (makeVisibleInVisualViewport) {
                     frameView->getScrollableArea()->scrollIntoView(rect, alignX, alignY, scrollType);
                 } else {
                     frameView->layoutViewportScrollableArea()->scrollIntoView(rect, alignX, alignY, scrollType);
                 }
                 if (ownerElement && ownerElement->layoutObject()) {
                     if (frameView->safeToPropagateScrollToParent()) {
                         parentBox = ownerElement->layoutObject()->enclosingBox();
                         LayoutView* parentView = ownerElement->layoutObject()->view();
@@ skipping 291 matching lines @@
         windowAutoscrollPoint.move(0, -autoscrollBeltSize);
     else if (windowAutoscrollPoint.y() > windowBox.maxY() - autoscrollBeltSize)
         windowAutoscrollPoint.move(0, autoscrollBeltSize);
 
     return windowAutoscrollPoint - pointInRootFrame;
 }
 
 LayoutBox* LayoutBox::findAutoscrollable(LayoutObject* layoutObject)
 {
     while (layoutObject && !(layoutObject->isBox() && toLayoutBox(layoutObject)->canAutoscroll())) {
-        if (!layoutObject->parent() && layoutObject->node() == layoutObject->document() && layoutObject->document().ownerElement())
-            layoutObject = layoutObject->document().ownerElement()->layoutObject();
+        if (!layoutObject->parent() && layoutObject->node() == layoutObject->document() && layoutObject->document().localOwner())
+            layoutObject = layoutObject->document().localOwner()->layoutObject();
         else
             layoutObject = layoutObject->parent();
     }
 
     return layoutObject && layoutObject->isBox() ? toLayoutBox(layoutObject) : 0;
 }
 
 static inline int adjustedScrollDelta(int beginningDelta)
 {
     // This implemention matches Firefox's.
@@ skipping 3915 matching lines @@
 
 void LayoutBox::clearPercentHeightDescendants()
 {
     for (LayoutObject* curr = slowFirstChild(); curr; curr = curr->nextInPreOrder(this)) {
         if (curr->isBox())
             toLayoutBox(curr)->removeFromPercentHeightContainer();
     }
 }
 
 } // namespace blink