am a80331c4: Merge "Comment-only change to add documentation for FileObserver" into froyo

Merge commit 'a80331c4d75cb8a7122e31315bc1e2950131659c' into froyo-plus-aosp

* commit 'a80331c4d75cb8a7122e31315bc1e2950131659c':
  Comment-only change to add documentation for FileObserver