Adding a title to contentDesciption of the seekbar.
The title is helpful to indicate which seekbar user is changing when
talkback is enabled.
Also move SeekBarPreference from root package to widget packge.
Change-Id: I793f41c4902e350b6bc6d62761362779cc3722a9
Fix: 35421942
Test: make RunSettingsRoboTests
Adds new preference screen for the feature, where the feature can be
enabled/disabled, and delay before click can be specified (implemented
as seek bar preference, enabled iff the feature is enabled).
Preference is added to Accessibility setting. The preference summary is
set to string describing the delay after pointer stops moving before
click is scheduled (the string also contains numerical value of the
delay).
BUG=20049245
Change-Id: Ib7b2f5c24efbd08e3200143c069bcdbc9b5a327a