Migrate ProcessMemory pullers

Test: atest UidAtomTests#testProcessMemoryState
Test: atest UidAtomTests#testProcessMemoryHighWaterMark
Test: atest UidAtomTests#testProcessMemorySnapshot
Test: adb shell cmd stats pull-source 10013
Test: adb shell cmd stats pull-source 10042
Test: adb shell cmd stats pull-source 10064
Change-Id: I0ce870a3fec668e380a6b6412f278033d6734f35
3 files changed