[fsp] Use types from another namespaces in IDL.

Before, it wasn't possible to refer to types defined in another namespace/file. However CL 197873009 enables it, so there is no need to use string as a workaround for enum.

TEST=unit_tests and browser_tests.
BUG=248427, 158654

Review URL: https://codereview.chromium.org/216583002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@263174 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed