Merge 142534

Merge 142534
> [Text Autosizing] Collect narrow descendants and process them separately. Refactoring for
> a change to follow.
> https://bugs.webkit.org/show_bug.cgi?id=109054
> 
> Preparational change to combine narrow descendants of the same autosizing cluster into
> groups by the width difference between the descendant and the block containing all text of
> the parent autosizing cluster. The groups will be autosized with the same multiplier.
> 
> For example, on sites with a sidebar, sometimes the paragraphs next to the sidebar will have
> a large margin individually applied (via a CSS selector), causing them all to individually
> appear narrower than their enclosing blockContainingAllText. Rather than making each of
> these paragraphs into a separate cluster, we eventually want to be able to merge them back
> together into one (or a few) descendant clusters.
> 
> Patch by Anton Vayvod <avayvod@chromium.org>; on 2013-02-11
> Reviewed by Julien Chaffraix.
> 
> No behavioral changes thus no new tests or test changes.
> 
> * rendering/TextAutosizer.cpp:
> (TextAutosizingClusterInfo): Vector of narrow descendants.
> (WebCore::TextAutosizer::processCluster): Process narrow descendants separately.
> (WebCore::TextAutosizer::processContainer):
> 
>     Remember narrow descendants of the parent cluster for later processing.

TBR=commit-queue@webkit.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=143928

[Peter Beverloo, 2013-02-25 16:44:58]

Committed patchset #1 manually as r143928.