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

mojo/edk/system/channel_test_base.cc

 // Copyright 2015 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/channel_test_base.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/edk/embedder/platform_channel_pair.h"
 #include "mojo/edk/system/raw_channel.h"
 
 namespace mojo {
 namespace system {
 namespace test {
 
 ChannelTestBase::ChannelTestBase()
-    : io_thread_(mojo::test::TestIOThread::kAutoStart) {}
+    : io_thread_(mojo::test::TestIOThread::StartMode::AUTO) {}
 
 ChannelTestBase::~ChannelTestBase() {
 }
 
 void ChannelTestBase::SetUp() {
   PostMethodToIOThreadAndWait(FROM_HERE, &ChannelTestBase::SetUpOnIOThread);
 }
 
 void ChannelTestBase::CreateChannelOnIOThread(unsigned i) {
   CHECK_EQ(base::MessageLoop::current(), io_thread()->message_loop());
@@ skipping 31 matching lines @@
   CHECK_EQ(base::MessageLoop::current(), io_thread()->message_loop());
 
   embedder::PlatformChannelPair channel_pair;
   raw_channels_[0] = RawChannel::Create(channel_pair.PassServerHandle());
   raw_channels_[1] = RawChannel::Create(channel_pair.PassClientHandle());
 }
 
 }  // namespace test
 }  // namespace system
 }  // namespace mojo