Merge "getDmabufMappedSizeKb: Use ReadDmaBufMapRefs()" am: 36f5f53a61 am: 0010cbec06 am: d3c84f7d31

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1622159

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I3e3750251670837afafdc51da41ab0ba148c2659