Revert of Update of change event for input type number (https://codereview.chromium.org/128133002/)

Reason for revert:
I'm afraid It made time-multiple-fields-spinbutton-change-and-input-events.html falky.


Original issue's description:
> Do not dispatch 'change' events during pressing spin buttons for input[type=number].
> 
> TextFieldInputType sends change event for its derived class. Change is
> done for DispatchInputAndChangeEvent to behave similar to
> DispatchChangeEvent.
> DispatchChangeEvent is generated by Range, Radio, File and Checkbox
> input type.
> DispatchInputAndChangeEvent is generated by inputtype for step up and
> down, BaseChooser/BaseMultipleFieldsDateandTime also generates
> DispatchInputAndChangeEvent.
> Since it is different set of inputs that generate DispatchChange and
> DispatchInputAndChange, both are kept but behavior is changed; this
> allows spin button to handle mouseup event.
> Keyboard events are also handled for spin button.
> 
> R=tkent
> BUG=155747
> TEST=automated
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=165300

TBR=keishi@chromium.org,habib.virji@samsung.com
NOTREECHECKS=true
NOTRY=true
BUG=155747

Review URL: https://codereview.chromium.org/140793012

git-svn-id: svn://svn.chromium.org/blink/trunk@165376 bbb929c8-8fbe-4397-9dbb-9b2b20218538