Make Dispatcher::Type an enum class.

mojo/edk/system/message_pipe.cc

 // Copyright 2013 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/edk/system/message_pipe.h"
 
 #include "base/logging.h"
 #include "mojo/edk/system/channel.h"
 #include "mojo/edk/system/channel_endpoint.h"
 #include "mojo/edk/system/channel_endpoint_id.h"
@@ skipping 334 matching lines @@
   // You're not allowed to send either handle to a message pipe over the message
   // pipe, so check for this. (The case of trying to write a handle to itself is
   // taken care of by |Core|. That case kind of makes sense, but leads to
   // complications if, e.g., both sides try to do the same thing with their
   // respective handles simultaneously. The other case, of trying to write the
   // peer handle to a handle, doesn't make sense -- since no handle will be
   // available to read the message from.)
   for (size_t i = 0; i < transports->size(); i++) {
     if (!(*transports)[i].is_valid())
       continue;
-    if ((*transports)[i].GetType() == Dispatcher::kTypeMessagePipe) {
+    if ((*transports)[i].GetType() == Dispatcher::Type::MESSAGE_PIPE) {
       MessagePipeDispatcherTransport mp_transport((*transports)[i]);
       if (mp_transport.GetMessagePipe() == this) {
         // The other case should have been disallowed by |Core|. (Note: |port|
         // is the peer port of the handle given to |WriteMessage()|.)
         DCHECK_EQ(mp_transport.GetPort(), port);
         return MOJO_RESULT_INVALID_ARGUMENT;
       }
     }
   }
 
   // Clone the dispatchers and attach them to the message. (This must be done as
   // a separate loop, since we want to leave the dispatchers alone on failure.)
   scoped_ptr<DispatcherVector> dispatchers(new DispatcherVector());
   dispatchers->reserve(transports->size());
   for (size_t i = 0; i < transports->size(); i++) {
     if ((*transports)[i].is_valid()) {
       dispatchers->push_back(
           (*transports)[i].CreateEquivalentDispatcherAndClose());
     } else {
       LOG(WARNING) << "Enqueueing null dispatcher";
       dispatchers->push_back(nullptr);
     }
   }
   message->SetDispatchers(dispatchers.Pass());
   return MOJO_RESULT_OK;
 }
 
 }  // namespace system
 }  // namespace mojo