Revert 268937 "Revert 268867 "Pull WebKit 173548.""
Double sided commit already landed.. broke compile.
> Revert 268867 "Pull WebKit 173548."
>
> Broke image decoding tests: http://build.chromium.org/p/chromium.win/builders/Win%207%20Tests%20x64%20%283%29/builds/13498/
>
> > Pull WebKit 173548.
> >
> > BUG=38618
> > TEST=none
> > TBR=japhet
> >
> > Review URL: https://codereview.chromium.org/
274673003
>
> TBR=pkasting@chromium.org
>
> Review URL: https://codereview.chromium.org/
278433006
TBR=dalecurtis@google.com
Review URL: https://codereview.chromium.org/
273703005
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@268941 0039d316-1c4b-4281-b951-d872f2087c98