Update a comment that mentions the nonexistent Reset() method.

R=henrika@webrtc.org, phoglund@webrtc.org, niklas.enbom@webrtc.org
BUG=none
TEST=none

Review URL: https://webrtc-codereview.appspot.com/56539004

Cr-Commit-Position: refs/heads/master@{#9332}
diff --git a/webrtc/system_wrappers/interface/event_wrapper.h b/webrtc/system_wrappers/interface/event_wrapper.h
index 97811f3..7d9e47c 100644
--- a/webrtc/system_wrappers/interface/event_wrapper.h
+++ b/webrtc/system_wrappers/interface/event_wrapper.h
@@ -39,7 +39,7 @@
 
   // Puts the calling thread into a wait state. The thread may be released
   // by a Set() call depending on if other threads are waiting and if so on
-  // timing. The thread that was released will call Reset() before leaving
+  // timing. The thread that was released will reset the event before leaving
   // preventing more threads from being released. If multiple threads
   // are waiting for the same Set(), only one (random) thread is guaranteed to
   // be released. It is possible that multiple (random) threads are released