Camera2/3: Fix deadlock when starting recording before preview.

Move 3A notification synthesis for HAL3 devices from
Camera3Device::processCaptureResult to Camera2Client's
FrameProcessor. This will ensure that calls to processCaptureResult
from HAL can never block on Camera2Client internal mutexes.

Bug: 9923891
Change-Id: I5184649bf45c0807babe6b8c0e1239e959cd3480
Merge tag 'android-4.3_r3.1' into jb-4.3

Android 4.3 Release 3.1
Merge commit 'c7fc176672ae4c20944fd6a5f3896ef4be66a4b6' into jb-4.3