Enable scrollTopLeftInterop by default.

Approved intent to ship: https://groups.google.com/a/chromium.org/d/msg/blink-dev/X64Sg16RhT4/6ZiW7Dt8CAAJ

BUG=157855

Change-Id: I71f4beae0aa12e4bd0b39d0c78371510d7bedbb3
Reviewed-on: https://chromium-review.googlesource.com/527917
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481208}
1 file changed