Camera: Adds support for meta data callbacks

- This change adds a new type of callback
  that will be called when there are pending
  meta data notifications.

Change-Id: I84f5cbafe4f023c7b0efa9ec8620756b0eaa428d
Fix issue #10226007: Reset apps restores most of the changed settings...

...to original but not all modified ones

Very stupid mistakes in messing up the iteration when pruning op
entries.

Change-Id: Ie536b9095f797fcd2b86c9a386a72746796430d1
base: App crash when select suggestion's length more than specified.

App crashed by catch IndexOutOfBoundsException which raised
by check span range when select suggested string.The root
cause is that the editor will truncate the suggested string
which length is more than it specified, but it also set span
use the suggestion's original length.

Update the suggestion's real length after editor replace the
original string to suggested.

Change-Id: I2d765701934a9e68be172cb87a104590f3cdeceb
CRs-Fixed: 532211