am b86365ad: Merge "Suppress the video recording start signal - bug 2950297" into gingerbread

Merge commit 'b86365ad74a197f2af6d70eedeb19083e31a9686' into gingerbread-plus-aosp

* commit 'b86365ad74a197f2af6d70eedeb19083e31a9686':
  Suppress the video recording start signal