Merge "Add a missing sync to RemoteCallbackList dump"

    /** @hide */

    public void dump(PrintWriter pw, String prefix) {

        synchronized (mCallbacks) {

            pw.print(prefix); pw.print("callbacks: "); pw.println(mCallbacks.size());

            pw.print(prefix); pw.print("killed: "); pw.println(mKilled);

            pw.print(prefix); pw.print("broadcasts count: "); pw.println(mBroadcastCount);

        }

    }

    private void logExcessiveCallbacks() {

        final long size = mCallbacks.size();