Make Dispatcher::Type an enum class.

mojo/edk/system/core_test_base.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/core_test_base.h"
 
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
@@ skipping 12 matching lines @@
 // MockDispatcher --------------------------------------------------------------
 
 class MockDispatcher : public Dispatcher {
  public:
   explicit MockDispatcher(CoreTestBase::MockHandleInfo* info) : info_(info) {
     CHECK(info_);
     info_->IncrementCtorCallCount();
   }
 
   // |Dispatcher| private methods:
-  Type GetType() const override { return kTypeUnknown; }
+  Type GetType() const override { return Type::UNKNOWN; }
 
  private:
   ~MockDispatcher() override { info_->IncrementDtorCallCount(); }
 
   // |Dispatcher| protected methods:
   void CloseImplNoLock() override {
     info_->IncrementCloseCallCount();
     lock().AssertAcquired();
   }
 
@@ skipping 326 matching lines @@
 }
 
 void CoreTestBase_MockHandleInfo::AwakableWasAdded(Awakable* awakable) {
   base::AutoLock locker(lock_);
   added_awakables_.push_back(awakable);
 }
 
 }  // namespace test
 }  // namespace system
 }  // namespace mojo