Explicit delay in View.java

Currently, the checkForLongClick function receives an argument that
later gets subtracted from some default value, but it is confusing to
use such a function. The natural computation is to provide the time
delay directly.
Minor refactor of View.java here to simplify the math.

Bug: none
Test: none
Change-Id: Ic237e8edac5bd2c7608215f20706a4a67a194b4b