Remove aggressive DCHECK in remoting::protocol::MessageReader()

remoting/protocol/message_reader.cc

Index: remoting/protocol/message_reader.cc
diff --git a/remoting/protocol/message_reader.cc b/remoting/protocol/message_reader.cc
index 3bbfd59e3c6aa6dccac72dcf11b04c069a5cd07a..d8324bef224961cd13587019184b339481dba087 100644
--- a/remoting/protocol/message_reader.cc
+++ b/remoting/protocol/message_reader.cc
@@ -40,8 +40,6 @@ void MessageReader::Init(net::Socket* socket,
 }
 
 void MessageReader::DoRead() {
-  DCHECK(!read_pending_);
-
   // Don't try to read again if there is another read pending or we
   // have messages that we haven't finished processing yet.
   while (!closed_ && !read_pending_ && pending_messages_ == 0) {