GitLab

These tests were passing and just needed new expectations:
paint/overflow/fixed-background-scroll-window.html
fast/sub-pixel/repaint-subpixel-layer-in-subpixel-composited-layer.html
fast/sub-pixel/should-not-repaint-subpixel-composited-layer.html

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_layout_tests_root_layer_scrolls
Change-Id: I2fb8c49e3aa5d1ce054bcd2d63f5f19ef66d1caa
Reviewed-on: https://chromium-review.googlesource.com/772813Reviewed-by: Stefan Zager <szager@chromium.org>
Commit-Queue: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517123}