The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/40e8aff900f1c7be05b3e6d68aae1504e116a8d8

commit 40e8aff900f1c7be05b3e6d68aae1504e116a8d8
Author: dtapuska <dtapuska@chromium.org>
Date: Fri Mar 11 21:45:03 2016

Rename InputHandler::GESTURE to InputHandler::TOUCHSCREEN

Since mouse wheel events will use gestures. Make it clear that this
scroll input type was really referring to touchscreen.

Rename executed via:
sed -i 's/InputHandler::GESTURE/InputHandler::TOUCHSCREEN/g'
git cl format

BUG= 593017 
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1775013004

Cr-Commit-Position: refs/heads/master@{#380742}

[modify] https://crrev.com/40e8aff900f1c7be05b3e6d68aae1504e116a8d8/cc/input/input_handler.h
[modify] https://crrev.com/40e8aff900f1c7be05b3e6d68aae1504e116a8d8/cc/layers/scrollbar_layer_unittest.cc
[modify] https://crrev.com/40e8aff900f1c7be05b3e6d68aae1504e116a8d8/cc/trees/layer_tree_host_impl.cc
[modify] https://crrev.com/40e8aff900f1c7be05b3e6d68aae1504e116a8d8/cc/trees/layer_tree_host_impl_unittest.cc
[modify] https://crrev.com/40e8aff900f1c7be05b3e6d68aae1504e116a8d8/cc/trees/layer_tree_host_unittest_scroll.cc