add README.chromium

  ¯\_(ツ)_/¯

Bug: chromium:839924

Change-Id: I0f97d121bcbb1c0491bdf043361b6815edb61683
Reviewed-on: https://skia-review.googlesource.com/126701
Auto-Submit: Mike Klein <mtklein@chromium.org>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
diff --git a/README.chromium b/README.chromium
new file mode 100644
index 0000000..046f6b1
--- /dev/null
+++ b/README.chromium
@@ -0,0 +1,5 @@
+Name: skcms
+URL: https://skia.org/
+Version: unknown
+Security Critical: yes
+License: BSD