[automerger skipped] Add vdc volume getStorageSize am: 29ab03668f -s ours

am skip reason: Merged-In I907892041b1ce2cd72092a9877ac34c12bf3f254 with SHA-1 24b7d2ddbc is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/vold/+/24604927

Change-Id: I27d649fec3e49767da5b95a75ea0d0a8f00d9506
Signed-off-by: Automerger Merge Worker <[email protected]>