am ecde72fe: Ensure the IME is rendered above the surface when we z-order the surface to be on top.

Merge commit 'ecde72fe411811ca02a2565bf73b86e6e8ddc76b' into eclair-mr2-plus-aosp

* commit 'ecde72fe411811ca02a2565bf73b86e6e8ddc76b':
  Ensure the IME is rendered above the surface when we z-order the surface to be on top.