Fix typo WARRANTIEstrArg => WARRANTIES

This is an *ancient* typo (looks like these files were originally
written this way, thanks to the magic of cut-and-paste).

TBR=haraken

Review URL: https://codereview.chromium.org/115033004

git-svn-id: svn://svn.chromium.org/blink/trunk@163997 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove unused declaration of processViewport in Document

Trivial clean-up, the function was removed in crrev.com/23606013 but the
declaration was left in by accident.

R=dstockwell
BUG=

Review URL: https://codereview.chromium.org/108683005

git-svn-id: svn://svn.chromium.org/blink/trunk@163998 bbb929c8-8fbe-4397-9dbb-9b2b20218538