Revert 180119

This breaks the tree.

> Rolled WebKit 141478:141548
> 
> TEST=none
> TBR=fmalita
> BUG=none
> 
> Review URL: https://codereview.chromium.org/12093103

TBR=morrita@chromium.org
Review URL: https://codereview.chromium.org/12096111

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@180126 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -8,7 +8,7 @@ vars = {
   "sourceforge_url": "http://%(repo)s.svn.sourceforge.net/svnroot/%(repo)s",
   "webkit_trunk": "http://svn.webkit.org/repository/webkit/trunk",
   "nacl_trunk": "http://src.chromium.org/native_client/trunk",
-  "webkit_revision": "141548",
+  "webkit_revision": "141478",
   "chromium_git": "https://chromium.googlesource.com",
   "chromiumos_git": "https://chromium.googlesource.com/chromiumos",
   "swig_revision": "69281",