[automerger skipped] Return TotalMemory size when ddr size is not present am: 34f1eab4 -s ours

am skip reason: Merged-In I2323d79d869a4c58eb29d0cae351144f357b867d with SHA-1 f572402f is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23120746



Change-Id: I108b07410eeded86917d92bbc86b2eeda499e1f4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>