Camera: Document new video snapshot picture size behavior.
Camera: Document new video snapshot picture size behavior.

On some devices, video snapshot may return pictures that are smaller
than requested. Make that clear.

Bug: 7475089
Change-Id: I0bd759072a7f954e517f3d09cb676fb23f863912

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