Change Call Listeners to a concurrent Set.

Was running into concurrency issues so switching over to a more
resolient Set type that can handle removes during iteration.

Bug: 16299107
Change-Id: I6ea47d27589b8a1a5fc96bcc32ccf34b93b0cd19
1 file changed
tree: 1d95d9f30875f18cf6c3351e9a987e467dd0efea
  1. libs/
  2. res/
  3. src/
  4. tests/
  5. .classpath
  6. .project
  7. Android.mk
  8. AndroidManifest.xml