Removed android scrolling fake mouse moves and device_supports_mouse

third_party/WebKit/Source/core/frame/Settings.in

 # Defines properties which are available on the Settings object.
 #
 # Please think carefully before adding a new Setting.  Some questions to
 # consider are:
 # - Should this be a RuntimeEnabledFeature instead? Settings are for things
 #   which we support either values of at runtime.  Features are set at renderer
 #   process startup and are never changed. Features also tend to be set to a
 #   value based on the platform or the stability of the code in question, where
 #   as settings both codepaths need to be stable.
 # - How will you ensure test coverage of all relevant values of your setting?
@@ skipping 102 matching lines @@
 
 shouldRespectImageOrientation initial=false
 
 # Limited use by features which behave differently depending on the input
 # devices available.  For example, the pointer and hover media queries.
 # Note that we need to be careful when basing behavior or UI on this -
 # just because a device is present doesn't mean the user cares about it
 # or uses it (i.e. Chromebook Pixel users generally don't want to give up
 # screen real estate just because they happen to have a touchscreen).
 deviceSupportsTouch initial=false
-deviceSupportsMouse initial=true
 
 # This value indicates the number of simultaneous multi-touch points supported
 # by the currently connected screen/digitizer that supports the most points.
 # From Pointer Events spec:
 #   http://www.w3.org/TR/pointerevents/#widl-Navigator-maxTouchPoints
 maxTouchPoints type=int, initial=0
 
 # Whether touch gestures should be "fuzzed" to nearest touch targets.
 # It's expected that this is enabled everywhere by default, but it may be
 # disabled for testing purposes as the algorithm is not yet perfect.
@@ skipping 293 matching lines @@
 
 # Whether download UI should be hidden for the current page content.
 hideDownloadUI initial=false
 
 # Whether or not to issue range requests for images and show placeholders.
 fetchImagePlaceholders initial=false
 
 # Whether the frame is a presentation receiver and should expose
 # `navigator.presentation.receiver`.
 presentationReceiver initial=false