Remove Session#getDisplayFrame

The frame won't be changed if there is no IWindow#resized or
IWindowSession#relayout. So it can be retrieved from these methods
directly instead of another binder transaction.

And because some parameters are usually used together for layout,
the parameters are consolidated into a new ClientWindowFrames.
That reduces changing the interface in the future if the frame
related information needs to be changed.

Also refine the resize handling in ViewRootImpl to make it easier
to read.

There should be no behavior change by this modification.

Bug: 161781274
Test: WmTests, DialogFrameTests

Change-Id: I9f711ad2023442046fa8582944320b98e7c4ecfa