Rewrite base::Bind into base::BindOnce on trivial cases in base

base/message_loop/message_loop_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.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 452 matching lines @@
   EXPECT_EQ(order.Get(15), TaskItem(RECURSIVE, 1, false));
   EXPECT_EQ(order.Get(16), TaskItem(RECURSIVE, 3, true));
   EXPECT_EQ(order.Get(17), TaskItem(RECURSIVE, 3, false));
 }
 
 #endif  // defined(OS_WIN)
 
 void PostNTasksThenQuit(int posts_remaining) {
   if (posts_remaining > 1) {
     ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, Bind(&PostNTasksThenQuit, posts_remaining - 1));
+        FROM_HERE, BindOnce(&PostNTasksThenQuit, posts_remaining - 1));
   } else {
     MessageLoop::current()->QuitWhenIdle();
   }
 }
 
 #if defined(OS_WIN)
 
 class TestIOHandler : public MessageLoopForIO::IOHandler {
  public:
   TestIOHandler(const wchar_t* name, HANDLE signal, bool wait);
@@ skipping 191 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(DummyTaskObserver);
 };
 
 TEST(MessageLoopTest, TaskObserver) {
   const int kNumPosts = 6;
   DummyTaskObserver observer(kNumPosts);
 
   MessageLoop loop;
   loop.AddTaskObserver(&observer);
-  loop.task_runner()->PostTask(FROM_HERE, Bind(&PostNTasksThenQuit, kNumPosts));
+  loop.task_runner()->PostTask(FROM_HERE,
+                               BindOnce(&PostNTasksThenQuit, kNumPosts));
   RunLoop().Run();
   loop.RemoveTaskObserver(&observer);
 
   EXPECT_EQ(kNumPosts, observer.num_tasks_started());
   EXPECT_EQ(kNumPosts, observer.num_tasks_processed());
 }
 
 #if defined(OS_WIN)
 TEST(MessageLoopTest, IOHandler) {
   RunTest_IOHandler();
@@ skipping 156 matching lines @@
   // all the pending tasks have been destroyed).
   MessageLoop* loop = new MessageLoop;
   const TimeDelta kDelay = TimeDelta::FromMilliseconds(100);
 
   bool task_destroyed = false;
   bool destruction_observer_called = false;
 
   MLDestructionObserver observer(&task_destroyed, &destruction_observer_called);
   loop->AddDestructionObserver(&observer);
   loop->task_runner()->PostDelayedTask(
-      FROM_HERE, Bind(&DestructionObserverProbe::Run,
-                      new DestructionObserverProbe(
-                          &task_destroyed, &destruction_observer_called)),
+      FROM_HERE,
+      BindOnce(&DestructionObserverProbe::Run,
+               new DestructionObserverProbe(&task_destroyed,
+                                            &destruction_observer_called)),
       kDelay);
   delete loop;
   EXPECT_TRUE(observer.task_destroyed_before_message_loop());
   // The task should have been destroyed when we deleted the loop.
   EXPECT_TRUE(task_destroyed);
   EXPECT_TRUE(destruction_observer_called);
 }
 
 
 // Verify that MessageLoop sets ThreadMainTaskRunner::current() and it
 // posts tasks on that message loop.
 TEST(MessageLoopTest, ThreadMainTaskRunner) {
   MessageLoop loop;
 
   scoped_refptr<Foo> foo(new Foo());
   std::string a("a");
-  ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, Bind(
-      &Foo::Test1ConstRef, foo, a));
+  ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE, BindOnce(&Foo::Test1ConstRef, foo, a));
 
   // Post quit task;
   ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
-      Bind(&MessageLoop::QuitWhenIdle, Unretained(MessageLoop::current())));
+      BindOnce(&MessageLoop::QuitWhenIdle, Unretained(MessageLoop::current())));
 
   // Now kick things off
   RunLoop().Run();
 
   EXPECT_EQ(foo->test_count(), 1);
   EXPECT_EQ(foo->result(), "a");
 }
 
 TEST(MessageLoopTest, IsType) {
   MessageLoop loop(MessageLoop::TYPE_UI);
@@ skipping 102 matching lines @@
   EXPECT_EQ(new_runner, ThreadTaskRunnerHandle::Get());
 }
 
 TEST(MessageLoopTest, OriginalRunnerWorks) {
   MessageLoop loop;
   scoped_refptr<SingleThreadTaskRunner> new_runner(new TestSimpleTaskRunner());
   scoped_refptr<SingleThreadTaskRunner> original_runner(loop.task_runner());
   loop.SetTaskRunner(new_runner);
 
   scoped_refptr<Foo> foo(new Foo());
-  original_runner->PostTask(FROM_HERE,
-                            Bind(&Foo::Test1ConstRef, foo, "a"));
+  original_runner->PostTask(FROM_HERE, BindOnce(&Foo::Test1ConstRef, foo, "a"));
   RunLoop().RunUntilIdle();
   EXPECT_EQ(1, foo->test_count());
 }
 
 TEST(MessageLoopTest, DeleteUnboundLoop) {
   // It should be possible to delete an unbound message loop on a thread which
   // already has another active loop. This happens when thread creation fails.
   MessageLoop loop;
   std::unique_ptr<MessageLoop> unbound_loop(MessageLoop::CreateUnbound(
       MessageLoop::TYPE_DEFAULT, MessageLoop::MessagePumpFactoryCallback()));
@@ skipping 12 matching lines @@
 
   {
     std::string kThreadName("bar");
     base::Thread thread(kThreadName);
     ASSERT_TRUE(thread.StartAndWaitForTesting());
     EXPECT_EQ(kThreadName, thread.message_loop()->GetThreadName());
   }
 }
 
 }  // namespace base