content: Copy test runner resources from Blink to Chromium.

It is only the fonts for now, the gyp changes will come next.

BUG=331303
R=jochen@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/123493002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242881 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242881