Replace the easy cases of VERIFY usage.

webrtc/base/messagequeue.cc

Index: webrtc/base/messagequeue.cc
diff --git a/webrtc/base/messagequeue.cc b/webrtc/base/messagequeue.cc
index 503e8fe546fe182b13f2959733ea6e297eea4cf8..8dd84cb89c256d4b3fd99ab6ba1240ef3300954e 100644
--- a/webrtc/base/messagequeue.cc
+++ b/webrtc/base/messagequeue.cc
@@ -453,7 +453,8 @@ void MessageQueue::DoDelayPost(const Location& posted_from,
     // If this message queue processes 1 message every millisecond for 50 days,
     // we will wrap this number.  Even then, only messages with identical times
     // will be misordered, and then only briefly.  This is probably ok.
-    VERIFY(0 != ++dmsgq_next_num_);
+    ++dmsgq_next_num_;
+    RTC_DCHECK_NE(0, dmsgq_next_num_);
   }
   WakeUpSocketServer();
 }