blink/bindings: Enable background ParkableString compression by default.

Enabling a feature on trunk is required to ramp up the feature in stable.
The feature was already enabled on bots, so this CL removes the bots
configuration, but no behavior change is expected on bots.

Bug: 877044
Change-Id: I6ce5c45934fe34e4e22dab4b916058297b86a217
Reviewed-on: https://chromium-review.googlesource.com/c/1458201
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Brian White <bcwhite@chromium.org>
Commit-Queue: Benoit L <lizeb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630339}
3 files changed