Remove IOObservers from MessageLoopForIO.

base/message_loop/message_pump_io_ios.cc

Index: base/message_loop/message_pump_io_ios.cc
diff --git a/base/message_loop/message_pump_io_ios.cc b/base/message_loop/message_pump_io_ios.cc
index 9e6efeca1932f3aeed3078b7238ab3b07dbf0c4e..b464f74ed0ec40ef0549263325eaea9bef29a660 100644
--- a/base/message_loop/message_pump_io_ios.cc
+++ b/base/message_loop/message_pump_io_ios.cc
@@ -51,18 +51,14 @@ void MessagePumpIOSForIO::FileDescriptorWatcher::OnFileCanReadWithoutBlocking(
     int fd,
     MessagePumpIOSForIO* pump) {
   DCHECK(callback_types_ & kCFFileDescriptorReadCallBack);
-  pump->WillProcessIOEvent();
   watcher_->OnFileCanReadWithoutBlocking(fd);
-  pump->DidProcessIOEvent();
 }
 
 void MessagePumpIOSForIO::FileDescriptorWatcher::OnFileCanWriteWithoutBlocking(
     int fd,
     MessagePumpIOSForIO* pump) {
   DCHECK(callback_types_ & kCFFileDescriptorWriteCallBack);
-  pump->WillProcessIOEvent();
   watcher_->OnFileCanWriteWithoutBlocking(fd);
-  pump->DidProcessIOEvent();
 }
 
 MessagePumpIOSForIO::MessagePumpIOSForIO() : weak_factory_(this) {
@@ -152,22 +148,6 @@ void MessagePumpIOSForIO::RemoveRunLoopSource(CFRunLoopSourceRef source) {
   CFRunLoopRemoveSource(run_loop(), source, kCFRunLoopCommonModes);
 }
 
-void MessagePumpIOSForIO::AddIOObserver(IOObserver *obs) {
-  io_observers_.AddObserver(obs);
-}
-
-void MessagePumpIOSForIO::RemoveIOObserver(IOObserver *obs) {
-  io_observers_.RemoveObserver(obs);
-}
-
-void MessagePumpIOSForIO::WillProcessIOEvent() {
-  FOR_EACH_OBSERVER(IOObserver, io_observers_, WillProcessIOEvent());
-}
-
-void MessagePumpIOSForIO::DidProcessIOEvent() {
-  FOR_EACH_OBSERVER(IOObserver, io_observers_, DidProcessIOEvent());
-}
-
 // static
 void MessagePumpIOSForIO::HandleFdIOEvent(CFFileDescriptorRef fdref,
                                           CFOptionFlags callback_types,