Callback API Change: Reimplement Bind(); support IgnoreResult, full currying, and use less types

base/callback_internal.cc

 // Copyright (c) 2011 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 "base/callback_internal.h"
 
 namespace base {
 namespace internal {
 
 bool CallbackBase::is_null() const {
-  return invoker_storage_.get() == NULL;
+  return bind_state_.get() == NULL;
 }
 
 void CallbackBase::Reset() {
-  invoker_storage_ = NULL;
+  bind_state_ = NULL;
   polymorphic_invoke_ = NULL;
 }
 
 bool CallbackBase::Equals(const CallbackBase& other) const {
-  return invoker_storage_.get() == other.invoker_storage_.get() &&
+  return bind_state_.get() == other.bind_state_.get() &&
          polymorphic_invoke_ == other.polymorphic_invoke_;
 }
 
 CallbackBase::CallbackBase(InvokeFuncStorage polymorphic_invoke,
-                           scoped_refptr<InvokerStorageBase>* invoker_storage)
+                           scoped_refptr<BindStateBase>* bind_state)
     : polymorphic_invoke_(polymorphic_invoke) {
-  if (invoker_storage) {
-    invoker_storage_.swap(*invoker_storage);
+  if (bind_state) {
+    bind_state_.swap(*bind_state);
   }
 }
 
 CallbackBase::~CallbackBase() {
 }
 
 }  // namespace base
 }  // namespace internal