Revert "Keeps the served view of the window when focus to the ne..."

Revert "Refine FocusHandlingTest"

Revert submission 11182377-fix_b_152373385

Reason for revert: Fix b/155781821
Reverted Changes:
If20cdb43e:Keeps the served view of the window when focus to ...
I50402165b:Refine FocusHandlingTest
Bug: 152373385
Bug: 155781821

Change-Id: I44469caf5a5ceaf247c4e6b0694da9da1f3c0eb1