The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/dad0c1edb6da7ce815e5019c87cd1f474b3d055c

commit dad0c1edb6da7ce815e5019c87cd1f474b3d055c
Author: sahel <sahel@chromium.org>
Date: Thu Jun 15 22:32:11 2017

Ignore the rest of the scroll sequence if GSB is ignored.

This cl also modifies ContentViewCoreScrollingTests to initialize the
compositor's outer viewport before starting the test. This change is
required, as without properly initializing the compositor's outer
viewport, GSB events and the rest of the scroll sequences will get
ignored.

BUG= 730197 
TEST=AnimateInput/InputHandlerProxyTest.GestureScrollIgnored/*
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel

Review-Url: https://codereview.chromium.org/2924953002
Cr-Commit-Position: refs/heads/master@{#479871}

[modify] https://crrev.com/dad0c1edb6da7ce815e5019c87cd1f474b3d055c/cc/trees/layer_tree_host_impl.cc
[modify] https://crrev.com/dad0c1edb6da7ce815e5019c87cd1f474b3d055c/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
[modify] https://crrev.com/dad0c1edb6da7ce815e5019c87cd1f474b3d055c/content/public/android/javatests/src/org/chromium/content/browser/ContentViewScrollingTest.java
[modify] https://crrev.com/dad0c1edb6da7ce815e5019c87cd1f474b3d055c/ui/events/blink/input_handler_proxy.cc
[modify] https://crrev.com/dad0c1edb6da7ce815e5019c87cd1f474b3d055c/ui/events/blink/input_handler_proxy.h
[modify] https://crrev.com/dad0c1edb6da7ce815e5019c87cd1f474b3d055c/ui/events/blink/input_handler_proxy_unittest.cc