Sandboxing built-in flash

This is the last change needed to have an experimental sandboxed flash for windows
- Adds an export so flash can lower the token
- Thightents the policy a bit
- Sets a separate flash data directory.

BUG=50796
TES=see bug


Review URL: http://codereview.chromium.org/3245006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@57899 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed