Make Dispatcher::Type an enum class.

mojo/edk/system/message_pipe_dispatcher_unittest.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.
 
 // NOTE(vtl): Some of these tests are inherently flaky (e.g., if run on a
 // heavily-loaded system). Sorry. |test::EpsilonTimeout()| may be increased to
 // increase tolerance and reduce observed flakiness (though doing so reduces the
 // meaningfulness of the test).
 
 #include "mojo/edk/system/message_pipe_dispatcher.h"
@@ skipping 25 matching lines @@
 TEST(MessagePipeDispatcherTest, Basic) {
   test::Stopwatch stopwatch;
   int32_t buffer[1];
   const uint32_t kBufferSize = static_cast<uint32_t>(sizeof(buffer));
   uint32_t buffer_size;
 
   // Run this test both with |d0| as port 0, |d1| as port 1 and vice versa.
   for (unsigned i = 0; i < 2; i++) {
     scoped_refptr<MessagePipeDispatcher> d0(new MessagePipeDispatcher(
         MessagePipeDispatcher::kDefaultCreateOptions));
-    EXPECT_EQ(Dispatcher::kTypeMessagePipe, d0->GetType());
+    EXPECT_EQ(Dispatcher::Type::MESSAGE_PIPE, d0->GetType());
     scoped_refptr<MessagePipeDispatcher> d1(new MessagePipeDispatcher(
         MessagePipeDispatcher::kDefaultCreateOptions));
     {
       scoped_refptr<MessagePipe> mp(MessagePipe::CreateLocalLocal());
       d0->Init(mp, i);      // 0, 1.
       d1->Init(mp, i ^ 1);  // 1, 0.
     }
     Waiter w;
     uint32_t context = 0;
     HandleSignalsState hss;
@@ skipping 625 matching lines @@
   EXPECT_EQ(total_messages_written, total_messages_read);
   EXPECT_EQ(total_bytes_written, total_bytes_read);
 
   EXPECT_EQ(MOJO_RESULT_OK, d_write->Close());
   EXPECT_EQ(MOJO_RESULT_OK, d_read->Close());
 }
 
 }  // namespace
 }  // namespace system
 }  // namespace mojo