Mojo: Add the ability to attach PlatformHandles to MessageInTransits.

mojo/system/raw_channel.cc

 // 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.
 
 #include "mojo/system/raw_channel.h"
 
 #include <string.h>
 
 #include <algorithm>
 
@@ skipping 132 matching lines @@
   weak_ptr_factory_.InvalidateWeakPtrs();
 
   read_stopped_ = true;
   write_stopped_ = true;
 
   OnShutdownNoLock(read_buffer_.Pass(), write_buffer_.Pass());
 }
 
 // Reminder: This must be thread-safe.
 bool RawChannel::WriteMessage(scoped_ptr<MessageInTransit> message) {
+  DCHECK(message);
+
+  // TODO(vtl)
+  if (message->has_platform_handles()) {
+    NOTIMPLEMENTED();
+    return false;
+  }
+
   base::AutoLock locker(write_lock_);
   if (write_stopped_)
     return false;
 
   if (!write_buffer_->message_queue_.empty()) {
     write_buffer_->message_queue_.push_back(message.release());
     return true;
   }
 
   write_buffer_->message_queue_.push_front(message.release());
@@ skipping 187 matching lines @@
   }
 
   write_stopped_ = true;
   STLDeleteElements(&write_buffer_->message_queue_);
   write_buffer_->offset_ = 0;
   return false;
 }
 
 }  // namespace system
 }  // namespace mojo