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Reduce the work that's done while evaluating the query transform of a rule. This
is done by indexing escaped values for the query key value pairs. Also, sort and
remove duplicates before indexing the query keys to be removed.

BUG=983685

Change-Id: Ia6e72832253025c4a43b5852e00a7a064d3fcd6b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1742887
Commit-Queue: Karan Bhatia <karandeepb@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#685397}