Convert //base to use std::unique_ptr

base/message_loop/message_pump_io_ios_unittest.cc

Index: base/message_loop/message_pump_io_ios_unittest.cc
diff --git a/base/message_loop/message_pump_io_ios_unittest.cc b/base/message_loop/message_pump_io_ios_unittest.cc
index e51de70c0e0e88322fe5ef65e0a8d7a81ccd7436..9aadc6bbfc2624ff380c950017114c47fb016581 100644
--- a/base/message_loop/message_pump_io_ios_unittest.cc
+++ b/base/message_loop/message_pump_io_ios_unittest.cc
@@ -121,7 +121,7 @@ class DeleteWatcher : public BaseWatcher {
 };
 
 TEST_F(MessagePumpIOSForIOTest, DeleteWatcher) {
-  scoped_ptr<MessagePumpIOSForIO> pump(new MessagePumpIOSForIO);
+  std::unique_ptr<MessagePumpIOSForIO> pump(new MessagePumpIOSForIO);
   MessagePumpIOSForIO::FileDescriptorWatcher* watcher =
       new MessagePumpIOSForIO::FileDescriptorWatcher;
   DeleteWatcher delegate(watcher);
@@ -157,7 +157,7 @@ class StopWatcher : public BaseWatcher {
 };
 
 TEST_F(MessagePumpIOSForIOTest, StopWatcher) {
-  scoped_ptr<MessagePumpIOSForIO> pump(new MessagePumpIOSForIO);
+  std::unique_ptr<MessagePumpIOSForIO> pump(new MessagePumpIOSForIO);
   MessagePumpIOSForIO::FileDescriptorWatcher watcher;
   StopWatcher delegate(&watcher, pump.get());
   pump->WatchFileDescriptor(pipefds_[1],
@@ -168,7 +168,7 @@ TEST_F(MessagePumpIOSForIOTest, StopWatcher) {
 }
 
 TEST_F(MessagePumpIOSForIOTest, StopWatcherAndWatchSomethingElse) {
-  scoped_ptr<MessagePumpIOSForIO> pump(new MessagePumpIOSForIO);
+  std::unique_ptr<MessagePumpIOSForIO> pump(new MessagePumpIOSForIO);
   MessagePumpIOSForIO::FileDescriptorWatcher watcher;
   StopWatcher delegate(&watcher, pump.get(), alternate_pipefds_[1]);
   pump->WatchFileDescriptor(pipefds_[1],