Adds PriorityQueue and PrioritizedDispatcher.

net/dns/dns_query.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_DNS_DNS_QUERY_H_
 #define NET_DNS_DNS_QUERY_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
@@ skipping 14 matching lines @@
   ~DnsQuery();
 
   // Clones |this| verbatim, with ID field of the header set to |id|.
   DnsQuery* CloneWithNewId(uint16 id) const;
 
   // DnsQuery field accessors.
   uint16 id() const;
   base::StringPiece qname() const;
   uint16 qtype() const;
 
-  // Returns the Question section of the query.  Used when matching the
-  // response.
+  // Returns the Question section of the query. Used when matching the response.
   base::StringPiece question() const;
 
   // IOBuffer accessor to be used for writing out the query.
   IOBufferWithSize* io_buffer() const { return io_buffer_; }
 
  private:
   DnsQuery(const DnsQuery& orig, uint16 id);
 
   // Size of the DNS name (*NOT* hostname) we are trying to resolve; used
   // to calculate offsets.
   size_t qname_size_;
 
   // Contains query bytes to be consumed by higher level Write() call.
   scoped_refptr<IOBufferWithSize> io_buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(DnsQuery);
 };
 
 }  // namespace net
 
 #endif  // NET_DNS_DNS_QUERY_H_