Delete unused features of AsyncInvoke.

webrtc/base/asyncinvoker.cc

 /*
  *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 98 matching lines @@
   // We should never get more than one notification about the thread dying.
   RTC_DCHECK(thread_ != nullptr);
   thread_ = nullptr;
 }
 
 AsyncClosure::~AsyncClosure() {
   AtomicOps::Decrement(&invoker_->pending_invocations_);
   invoker_->invocation_complete_.Set();
 }
 
-NotifyingAsyncClosureBase::NotifyingAsyncClosureBase(
-    AsyncInvoker* invoker,
-    const Location& callback_posted_from,
-    Thread* calling_thread)
-    : AsyncClosure(invoker),
-      callback_posted_from_(callback_posted_from),
-      calling_thread_(calling_thread) {
-  calling_thread->SignalQueueDestroyed.connect(
-      this, &NotifyingAsyncClosureBase::CancelCallback);
-  // Note: We don't need to listen for the invoker being destroyed, because it
-  // will wait for this closure to be destroyed (and pending_invocations_ to go
-  // to 0) before its destructor completes.
-}
-
-NotifyingAsyncClosureBase::~NotifyingAsyncClosureBase() {
-  disconnect_all();
-}
-
-void NotifyingAsyncClosureBase::TriggerCallback() {
-  CritScope cs(&crit_);
-  if (!CallbackCanceled() && !callback_.empty()) {
-    invoker_->AsyncInvoke<void>(callback_posted_from_, calling_thread_,
-                                callback_);
-  }
-}
-
-void NotifyingAsyncClosureBase::CancelCallback() {
-  // If the callback is triggering when this is called, block the
-  // destructor of the dying object here by waiting until the callback
-  // is done triggering.
-  CritScope cs(&crit_);
-  // calling_thread_ == nullptr means do not trigger the callback.
-  calling_thread_ = nullptr;
-}
-
 }  // namespace rtc