Merge "Update default desktop app density to 284" into udc-qpr-dev am: f312e919

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23681071



Change-Id: Ia00566a1de7655132d031a5b3b5cc5d078d8d18f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>