Add a Mojo EDK for Chrome that uses one OS pipe per message pipe.

mojo/edk/system/message_in_transit_queue.h

 // Copyright 2014 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 MOJO_EDK_SYSTEM_MESSAGE_IN_TRANSIT_QUEUE_H_
 #define MOJO_EDK_SYSTEM_MESSAGE_IN_TRANSIT_QUEUE_H_
 
 #include <deque>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 27 matching lines @@
   const MessageInTransit* PeekMessage() const { return queue_.front(); }
   MessageInTransit* PeekMessage() { return queue_.front(); }
 
   void DiscardMessage() {
     delete queue_.front();
     queue_.pop_front();
   }
 
   void Clear();
 
-  // Efficiently swaps contents with |*other|.
+  // Efficiently swaps contents with |*other|.S
   void Swap(MessageInTransitQueue* other);
 
  private:
   // TODO(vtl): When C++11 is available, switch this to a deque of
   // |scoped_ptr|/|unique_ptr|s.
   std::deque<MessageInTransit*> queue_;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(MessageInTransitQueue);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_MESSAGE_IN_TRANSIT_QUEUE_H_