Remove a few more unneeded Frame.h includes.

Reduced number of build steps after touching Frame.h from 420 to 410.

BUG=none
R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/23872009

git-svn-id: svn://svn.chromium.org/blink/trunk@157472 bbb929c8-8fbe-4397-9dbb-9b2b20218538