Refactor the inSelectRegion method in holders

Create an utility class and name it Views.
Rename the static method isTouchInViewRegion to isEventOver and put
it into Views class.

Bug: 113354083
Test: manual, enter split screen mode and click the mime-type icon
Change-Id: I20dc0c82baed878fcd83b19daf31b779301d51d8
5 files changed