linux: let harfbuzz be pulled in by gyp naturally
linux: let harfbuzz be pulled in by gyp naturally

Skia correctly depends on Harfbuzz so we don't need to depend on it
from the top-level gyp file.

TEST=compiles

Review URL: http://codereview.chromium.org/355031

git-svn-id: http://src.chromium.org/svn/trunk/src@31033 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 8c0cf5fd09d928dc4562016c6f8e943deb983601
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser