Unreviewed, rolling out r146373.

http://trac.webkit.org/changeset/146373
https://bugs.webkit.org/show_bug.cgi?id=113731

broke autosizing shrinking past previous size (Requested by
thorton on #webkit).

Patch by Sheriff Bot <webkit.review.bot@gmail.com> on 2013-04-01

* page/FrameView.cpp:
(WebCore::FrameView::autoSizeIfEnabled):

Canonical link: https://commits.webkit.org/132052@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@147369 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebCore/ChangeLog

@@ -1,3 +1,15 @@
+2013-04-01  Sheriff Bot  <webkit.review.bot@gmail.com>
+
+        Unreviewed, rolling out r146373.
+        http://trac.webkit.org/changeset/146373
+        https://bugs.webkit.org/show_bug.cgi?id=113731
+
+        broke autosizing shrinking past previous size (Requested by
+        thorton on #webkit).
+
+        * page/FrameView.cpp:
+        (WebCore::FrameView::autoSizeIfEnabled):
+
 2013-04-01  Timothy Hatcher  <timothy@apple.com>
 
         Allow changing Web Inspector dock sides without undocking first.

Source/WebCore/page/FrameView.cpp

@@ -2778,6 +2778,10 @@ void FrameView::autoSizeIfEnabled()
     if (!documentView || !documentElement)
         return;
 
+    RenderBox* documentRenderBox = documentElement->renderBox();
+    if (!documentRenderBox)
+        return;
+
     // If this is the first time we run autosize, start from small height and
     // allow it to grow.
     if (!m_didRunAutosize)
@@ -2791,7 +2795,7 @@ void FrameView::autoSizeIfEnabled()
         // Update various sizes including contentsSize, scrollHeight, etc.
         document->updateLayoutIgnorePendingStylesheets();
         int width = documentView->minPreferredLogicalWidth();
-        int height = documentView->documentRect().height();
+        int height = documentRenderBox->scrollHeight();
         IntSize newSize(width, height);
 
         // Check to see if a scrollbar is needed for a given dimension and