EDK: mostly style fix: change TestIOThread::Mode to an enum class.

mojo/edk/test/test_io_thread.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/test/test_io_thread.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/synchronization/waitable_event.h"
 
 namespace mojo {
 namespace test {
 
 namespace {
 
 void PostTaskAndWaitHelper(base::WaitableEvent* event,
                            const base::Closure& task) {
   task.Run();
   event->Signal();
 }
 
 }  // namespace
 
-TestIOThread::TestIOThread(Mode mode)
+TestIOThread::TestIOThread(StartMode start_mode)
     : io_thread_("test_io_thread"), io_thread_started_(false) {
-  switch (mode) {
-    case kAutoStart:
+  switch (start_mode) {
+    case StartMode::AUTO:
       Start();
       return;
-    case kManualStart:
+    case StartMode::MANUAL:
       return;
   }
   CHECK(false) << "Invalid mode";
 }
 
 TestIOThread::~TestIOThread() {
   Stop();
 }
 
 void TestIOThread::Start() {
@@ skipping 17 matching lines @@
 void TestIOThread::PostTaskAndWait(const tracked_objects::Location& from_here,
                                    const base::Closure& task) {
   base::WaitableEvent event(false, false);
   task_runner()->PostTask(from_here,
                           base::Bind(&PostTaskAndWaitHelper, &event, task));
   event.Wait();
 }
 
 }  // namespace test
 }  // namespace mojo