am 51ef573a: Switching from activity based full screen plugins to a view system overlay.

Merge commit '51ef573a8336c637ac508c49b84b512d8f11fa3a' into eclair-mr2-plus-aosp

* commit '51ef573a8336c637ac508c49b84b512d8f11fa3a':
  Switching from activity based full screen plugins to a view system overlay.