Merge "When a Virtual Display is plugged in, we create a corresponding surface...

Merge "When a Virtual Display is plugged in, we create a corresponding surface whose mutation should be owned by mSyncRoot(Owned by DisplayManagerService). However, there is an operation of getting the defaultSize of this Display which is performed without honouring the mSyncRoot." into tm-dev am: c47e9d00

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17238069

Change-Id: I76cef670aac7a109797efa2bcd7d01dd76ff4f27