Add return value spec and fix typo.
Add return value spec and fix typo.

Bug: 4371572
Change-Id: I4906a8f337dee855ef753e65eb69bdb02b1a0d72

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base