[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: Id4efb2646598d1dd6f12147a9651326021330d80
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4664434
Commit-Queue: Anne Redulla <aredulla@google.com>
Reviewed-by: Josip Sokcevic <sokcevic@chromium.org>

third_party/colorama/README.chromium

@@ -2,6 +2,9 @@ Name: colorama
 URL: https://github.com/tartley/colorama
 Version: b71bec90d4770d4124ad95d70cc6a4c9289bbadf (0.4.1)
 Revision: b71bec90d4770d4124ad95d70cc6a4c9289bbadf
+License: BSD
+License File: LICENSE.txt
+Shipped: no
 
 Description:
 Provides a simple cross-platform API to print colored terminal text from Python

third_party/schema/README.chromium

@@ -2,6 +2,8 @@ Name: schema
 URL: https://github.com/keleshev/schema
 Version: 0.6.6
 License: MIT
+License File: LICENSE-MIT
+Shipped: no
 
 Description:
 schema is a library for validating Python data structures, such as those

third_party/six/README.chromium

@@ -2,6 +2,7 @@ URL: https://pypi.python.org/pypi/six
 Version: 1.10.0
 License: MIT
 License File: LICENSE.txt
+Shipped: no
 
 Description:
 This directory contains the Python six module.