GitLab

This cleans up some usage of TempFile and some logic inside PnaclCoordinator to
make it easier to follow. I made these changes while doing some other cleanup
for DescWrapper use in the trusted plugin.

BUG=333950
R=jvoung@chromium.org

Review URL: https://codereview.chromium.org/299143004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@273024 0039d316-1c4b-4281-b951-d872f2087c98