[ssci] Added Shipped field to READMEs

This CL adds the Shipped field (and may update the
License File field) in Chromium READMEs. Changes were
automatically created, so if you disagree with any of
them (e.g. a package is used only for testing purposes
and is not shipped), comment the suggested change and
why.

See the LSC doc at go/lsc-chrome-metadata.

Bug: b:285450740


Change-Id: Idc316e1d0e71081caf9e618ba0c4329cd7ce7296
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/pyelftools/+/4666607
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Anne Redulla <aredulla@google.com>
Commit-Queue: Anne Redulla <aredulla@google.com>
diff --git a/README.chromium b/README.chromium
index 29489fa..3b2383e 100644
--- a/README.chromium
+++ b/README.chromium
@@ -6,6 +6,7 @@
 License: Public Domain
 License File: LICENSE
 Security Critical: no
+Shipped: yes
 
 Description:
 This contains Chromium OS's patched version of Eli Bendersky's pyelftools.