add self to frame-src
add self to frame-src

Bug: 939645
Change-Id: I693603538dc754b199bc79b20f2d7ceac92a28d7
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-py/+/1521047
Reviewed-by: Marc-Antoine Ruel <d2bf0fc09b08f7b0888b3ddab32b3e89c7122c8b@chromium.org>
Commit-Queue: Kevin Lubick <7cdab2cfab351f23814786ba39716e90eed69047@chromium.org>

luci/luci-py,luci/luci-py,luci/luci-py,luci/luci-py