The display frame is used to limit the windows boundary. The frame is
the same as the parent frame in most cases if the window is not
attched. However, if a window doesn't have any layout related
window/sysui flags and the soft input mode is not ADJUST_RESIZE, the
display frame doesn't need to be inset by IME (but the parent frame
does).
Fix: 163435784
Test: atest ViewRootImplTest DisplayPolicyLayoutTests
Merged-In: Ia61933120027642d1f0e0a490546071ca2b6c853
Change-Id: Ia61933120027642d1f0e0a490546071ca2b6c853
677078e872