Removes MessageLoop::TYPE_XXX where possible

base/cancelable_callback_unittest.cc

 // Copyright (c) 2011 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 "base/cancelable_callback.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 141 matching lines @@
                               base::Unretained(&count)));
   EXPECT_FALSE(cancelable.IsCancelled());
 
   cancelable.Cancel();
   EXPECT_TRUE(cancelable.IsCancelled());
 }
 
 // CancelableCallback posted to a MessageLoop with PostTask.
 //  - Callbacks posted to a MessageLoop can be cancelled.
 TEST(CancelableCallbackTest, PostTask) {
-  MessageLoop loop(MessageLoop::TYPE_DEFAULT);
+  MessageLoop loop;
 
   int count = 0;
   CancelableClosure cancelable(base::Bind(&Increment,
                                            base::Unretained(&count)));
 
   MessageLoop::current()->PostTask(FROM_HERE, cancelable.callback());
   RunLoop().RunUntilIdle();
 
   EXPECT_EQ(1, count);
 
   MessageLoop::current()->PostTask(FROM_HERE, cancelable.callback());
 
   // Cancel before running the message loop.
   cancelable.Cancel();
   RunLoop().RunUntilIdle();
 
   // Callback never ran due to cancellation; count is the same.
   EXPECT_EQ(1, count);
 }
 
 }  // namespace
 }  // namespace base