Disable CSA re-scheduling for the branch point, to address performance
regressions.

Bug: chromium:907011
Change-Id: I608ae23c20d8e1dd9a233dcb2d3f4ab4d8a5241e
Reviewed-on: https://chromium-review.googlesource.com/c/1351009Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57930}