The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5c538a9818f819ec5d2212567b763a28a6988a85

commit 5c538a9818f819ec5d2212567b763a28a6988a85
Author: Sandra Sun <sunyunjia@chromium.org>
Date: Wed Oct 31 14:55:55 2018

[Code cleanup] Removes runtime flag: CSSScrollSnapPoints

As CSSScrollSnap is shipped in M69, this patch removes the runtime flag.

Bug:  889523 
Change-Id: I600f21d04318d4abf375ea441de1bbc287532975
Reviewed-on: https://chromium-review.googlesource.com/c/1307117
Reviewed-by: David Bokan <bokan@chromium.org>
Commit-Queue: Sandra Sun <sunyunjia@chromium.org>
Cr-Commit-Position: refs/heads/master@{#604253}
[modify] https://crrev.com/5c538a9818f819ec5d2212567b763a28a6988a85/third_party/blink/renderer/core/css/css_properties.json5
[modify] https://crrev.com/5c538a9818f819ec5d2212567b763a28a6988a85/third_party/blink/renderer/core/css/parser/css_parser_fast_paths.cc
[modify] https://crrev.com/5c538a9818f819ec5d2212567b763a28a6988a85/third_party/blink/renderer/core/dom/document.cc
[modify] https://crrev.com/5c538a9818f819ec5d2212567b763a28a6988a85/third_party/blink/renderer/core/dom/element.cc
[modify] https://crrev.com/5c538a9818f819ec5d2212567b763a28a6988a85/third_party/blink/renderer/core/frame/local_dom_window.cc
[modify] https://crrev.com/5c538a9818f819ec5d2212567b763a28a6988a85/third_party/blink/renderer/core/input/scroll_manager.cc
[modify] https://crrev.com/5c538a9818f819ec5d2212567b763a28a6988a85/third_party/blink/renderer/platform/runtime_enabled_features.json5