ENOENT blocked filesystem syscalls.

BUG=304820,270326
TEST=Boot on daisy_spring.
NOTRY=true

Review URL: https://codereview.chromium.org/26285004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228545 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228545