Test output:
"""
[ RUN ] RenderWidgetHostViewMacTest.IgnoreEmptyUnhandledWheelEventWithWheelGestures
../../content/browser/renderer_host/render_widget_host_view_mac_unittest.mm:966: Failure
Value of: view_delegate.get().unhandledWheelEventReceived
Actual: ''
Expected: __objc_yes
Which is: '?' (1)
[3372:1287:0608/164121:1128775946716:FATAL:surface_manager.cc(43)] Check failed: namespace_client_map_.size() == 0u (1 vs. 0)
"""
Original issue's description:
> Remove enable/disable wheel gestures setting.
>
> Since wheel gesture based scrolling has shipped and the code has been
> removed from blink we can remove the runtime setting.
>
> BUG=598798
> CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
>
> Committed: https://crrev.com/3f5cea527647ebc8c505b1932d680854e162d82f
> Cr-Commit-Position: refs/heads/master@{#398716}
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# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true BUG=598798