This is the servo piece of:
[Bug 1448138](https://bugzilla.mozilla.org/show_bug.cgi?id=1448138) - Rename string DataFlags::SHARED to REFCOUNTED to make it clearer to those reading the code. r=erahm
This is a renaming in the internals of Gecko's string library that should also have a corresponding rename in the rust bindings. This is already reviewed as part of the Gecko change, and the two pieces should be able to land separately.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 1fda5d6a5a7dabbd80bc9efdedaadfeb9bf9e93a
62955d1108