Rely on Display#getRealSize when dumping XML hierarchy am: 74184991 am: 90075dd1 am: 240d62f7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21544237



Change-Id: I43096872c39e9a91a4a86fc5a7fdd67d52506400
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>