Add HandleIdReleased method for VirtualFileRequestService

BUG=chromium:740063
TEST=emerge

Change-Id: I2a5d2373f4bae9fba0cee6374be30e664c00727d
Reviewed-on: https://chromium-review.googlesource.com/674491
Commit-Ready: Ryo Hashimoto <hashimoto@chromium.org>
Tested-by: Ryo Hashimoto <hashimoto@chromium.org>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
1 file changed