Change CHECK_GE to DCHECK_GE in QuicSession::GetNumOpenOutgoingStreams().

Change-Id: I08f31c0bf1414720ce72302411d1d57fd0aa512e
Reviewed-on: https://chromium-review.googlesource.com/972357Reviewed-by: Ryan Hamilton <rch@chromium.org>
Commit-Queue: Zhongyi Shi <zhongyi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#544639}

net/quic/core/quic_session.cc

@@ -929,9 +929,9 @@ size_t QuicSession::GetNumOpenIncomingStreams() const {
 }
 
 size_t QuicSession::GetNumOpenOutgoingStreams() const {
-  CHECK_GE(GetNumDynamicOutgoingStreams() +
-               GetNumLocallyClosedOutgoingStreamsHighestOffset(),
-           GetNumDrainingOutgoingStreams());
+  DCHECK_GE(GetNumDynamicOutgoingStreams() +
+                GetNumLocallyClosedOutgoingStreamsHighestOffset(),
+            GetNumDrainingOutgoingStreams());
   return GetNumDynamicOutgoingStreams() +
          GetNumLocallyClosedOutgoingStreamsHighestOffset() -
          GetNumDrainingOutgoingStreams();