Use activity dimensions instead of display to calculate dialog size.

This adjusts the code for measuring and laying out dialog windows, which
used display dimensions as a basis for calculating the dialog
dimensions. Because of this dialogs would be too large in multi window
mode, where the parent bounds are far smaller than full display. This
switches to using dimensions for configuration received from activity
manager.

Mind, this is still not working as needed, because the resources return
minimal size of the dialog as if it was displayed on a full display,
rather than within activity bounds.

The CL also introduces better logging tags in ViewRootImpl and
DecorView. These normal approach works reasonably well when there is a
single activity on the display. However, when multiple windows are
displayed, it becomes impossible to determine which view root/decor view
logged what. This adds a suffix, that allows to identify the owner.

Bug: 26251921

Change-Id: I515a1ff9a81ee5ad086773196db71915e88a25eb