Use base::MessageLoop in more files.

base/mac/libdispatch_task_runner_unittest.cc

Index: base/mac/libdispatch_task_runner_unittest.cc
diff --git a/base/mac/libdispatch_task_runner_unittest.cc b/base/mac/libdispatch_task_runner_unittest.cc
index 5ebe8d2690023314ad0fea4a6f9b5aeb66f7a5fd..cf0dd0ee55196a63456613712624f18586c4a4d7 100644
--- a/base/mac/libdispatch_task_runner_unittest.cc
+++ b/base/mac/libdispatch_task_runner_unittest.cc
@@ -22,7 +22,7 @@ class LibDispatchTaskRunnerTest : public testing::Test {
   void DispatchLastTask() {
     dispatch_async(task_runner_->GetDispatchQueue(), ^{
         (&message_loop_)->PostTask(FROM_HERE,
-                                   MessageLoop::QuitWhenIdleClosure());
+                                   base::MessageLoop::QuitWhenIdleClosure());
     });
     message_loop_.Run();
     task_runner_->Shutdown();
@@ -52,7 +52,7 @@ class LibDispatchTaskRunnerTest : public testing::Test {
   }
 
   // The message loop for the test main thread.
-  MessageLoop message_loop_;
+  base::MessageLoop message_loop_;
 
   // The task runner under test.
   scoped_refptr<base::mac::LibDispatchTaskRunner> task_runner_;
@@ -117,7 +117,7 @@ TEST_F(LibDispatchTaskRunnerTest, PostTaskWithinTask) {
 TEST_F(LibDispatchTaskRunnerTest, NoMessageLoop) {
   task_runner_->PostTask(FROM_HERE, base::BindBlock(^{
       TaskOrderMarker marker(this,
-          base::StringPrintf("MessageLoop = %p", MessageLoop::current()));
+          base::StringPrintf("MessageLoop = %p", base::MessageLoop::current()));
   }));
   DispatchLastTask();
 
@@ -158,7 +158,7 @@ TEST_F(LibDispatchTaskRunnerTest, NonNestable) {
       task_runner_->PostNonNestableTask(FROM_HERE, base::BindBlock(^{
           TaskOrderMarker marker(this, "Second NonNestable");
           (&message_loop_)->PostTask(FROM_HERE,
-                                     MessageLoop::QuitWhenIdleClosure());
+                                     base::MessageLoop::QuitWhenIdleClosure());
       }));
   }));
   message_loop_.Run();
@@ -183,7 +183,8 @@ TEST_F(LibDispatchTaskRunnerTest, PostDelayed) {
   task_runner_->PostDelayedTask(FROM_HERE, base::BindBlock(^{
       TaskOrderMarker marker(this, "Timed");
       run_time = base::TimeTicks::Now();
-      (&message_loop_)->PostTask(FROM_HERE, MessageLoop::QuitWhenIdleClosure());
+      (&message_loop_)->PostTask(FROM_HERE,
+                                 base::MessageLoop::QuitWhenIdleClosure());
   }), delta);
   task_runner_->PostTask(FROM_HERE, BoundRecordTaskOrder(this, "Second"));
   message_loop_.Run();