am f140be6c: Call into app widget hosts when the provider is updated.

Merge commit 'f140be6c3c21dd0f6d2214929e89d60de31d2c04' into froyo-plus-aosp

* commit 'f140be6c3c21dd0f6d2214929e89d60de31d2c04':
  Call into app widget hosts when the provider is updated.