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

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I353c6157d3dc051481da2840436c34e606a39b9b