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 'tags/android-4.3_r3.1' into jb3

Android 4.3 Release 3.1

# gpg: error loading `iconv.dll': The specified module could not be found.
#
# gpg: please see http://www.gnupg.org/download/iconv.html for more information
# gpg: keyring `C:/Users/sean/AppData/Roaming/gnupg\pubring.gpg' created
# gpg: Signature made 09/18/13 19:40:03 using DSA key ID 9AB10E78
# gpg: Can't check signature: public key not found
Merge remote-tracking branch 'ls/jb3'; commit 'HEAD' into HEAD