Get rid of WebKitContext. Only two out of six HTML5 related objects were in it and it was just a glorified std::pair after the recent refactorings.

BUG=98716
Review URL: https://chromiumcodereview.appspot.com/9467016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@123588 0039d316-1c4b-4281-b951-d872f2087c98
42 files changed