Fix a bug in computing audio delay on ios device. Converts seconds to
milliseconds by multiplying 1000 instead of dividing 1000.

BUG=
R=tkchin@webrtc.org

Review URL: https://codereview.webrtc.org/1265823003 .

Patch from Jiawei Ou <jiawei.ou@gmail.com>.

Cr-Commit-Position: refs/heads/master@{#9693}
diff --git a/AUTHORS b/AUTHORS
index 29d9d0a..5ffa000 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -12,6 +12,7 @@
 Graham Yoakum <gyoakum@skobalt.com>
 Jake Hilton <jakehilton@gmail.com>
 James H. Brown <jbrown@burgoyne.com>
+Jiawei Ou <jiawei.ou@gmail.com>
 Jie Mao <maojie0924@gmail.com>
 Luke Weber <luke.weber@gmail.com>
 Manish Jethani <manish.jethani@gmail.com>