Pepper: Remove file_utils from trusted plugin.

This change moves some file reading and JSON parsing for pnacl resource info
outside the trusted plugin. This allows us to remove file_utils entirely from
the trusted plugin.

BUG=239656
R=bbudge@chromium.org

Review URL: https://codereview.chromium.org/261143002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@268578 0039d316-1c4b-4281-b951-d872f2087c98
9 files changed