GitLab

Couple of issues dealt with by this CL:

1) We should be starting the gesture from near the bottom of the page
   instead from the top (as it moves upwards)
2) In TouchInputTransferAcrossReactivation, we might get some scrolling
   in the main page before the first activation. We should be checking
   to see if it has scrolled more than that amount after reactivation

Bug: 1010675
Change-Id: I6289549f1326a80896c8b78e6a66a724ac6dbeff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1880077Reviewed-by: Kevin McNee <mcnee@chromium.org>
Commit-Queue: Adithya Srinivasan <adithyas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709989}