Merge 139435

Merge 139435
> Text Autosizing - elements much narrower than its parent autosizing clusters should be autosized separately.
> https://bugs.webkit.org/show_bug.cgi?id=105188
> 
> Patch by Anton Vayvod <avayvod@chromium.org>; on 2013-01-11
> Reviewed by Kenneth Rohde Christiansen.
> 
> Source/WebCore:
> 
> Some blocks of text might be narrower than their parent clusters and should be autosized separately.
> This helps with autosizing for the pages implementing the sidebars as a narrow blocks of text with wide margins and
> the main content being positioned atop this margin (or vice versa).
> 
> * rendering/TextAutosizer.cpp:
> (WebCore::TextAutosizer::isContainerAutosizingCluster):
> 
>     Returns true if the container is more than 200 pixels narrower than its parent cluster's lowest common
>     ancestor of all the text nodes.
> 
> LayoutTests:
> 
> Checked that a narrow autosizing container becomes an autosizing cluster.
> Fixed other tests that used narrow descendant blocks.
> 
> * fast/text-autosizing/cluster-narrow-in-wide-expected.html:
> * fast/text-autosizing/cluster-narrow-in-wide-ohidden-expected.html:
> * fast/text-autosizing/cluster-narrow-in-wide-ohidden.html:
> * fast/text-autosizing/cluster-narrow-in-wide.html:
> * fast/text-autosizing/cluster-with-wide-lca-expected.html:
> * fast/text-autosizing/cluster-with-wide-lca.html:
> * fast/text-autosizing/narrow-child-expected.html:
> * fast/text-autosizing/narrow-child.html:

TBR=commit-queue@webkit.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=139474