Remove some of the dependencies from modules/ in core/ and update the DEPS file.

core/ should not depend on modules/ at all, but there are a number of pieces of code that do.

Review URL: https://codereview.chromium.org/102993008

git-svn-id: svn://svn.chromium.org/blink/trunk@163389 bbb929c8-8fbe-4397-9dbb-9b2b20218538