Callback: De-inline CallbackBase, and move to callback_helpers -> callback_internal.h

base/callback_internal.cc

Index: base/callback_internal.cc
diff --git a/base/callback_internal.cc b/base/callback_internal.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d9d1e6f9eb60426d920e034ef0b70b1d808f2f0e
--- /dev/null
+++ b/base/callback_internal.cc
@@ -0,0 +1,36 @@
+// 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;
+}
+
+void CallbackBase::Reset() {
+  invoker_storage_ = NULL;
+  polymorphic_invoke_ = NULL;
+}
+
+bool CallbackBase::Equals(const CallbackBase& other) const {
+  return invoker_storage_.get() == other.invoker_storage_.get() &&
+         polymorphic_invoke_ == other.polymorphic_invoke_;
+}
+
+CallbackBase::CallbackBase(InvokeFuncStorage polymorphic_invoke,
+                           scoped_refptr<InvokerStorageBase>* invoker_storage)
+    : polymorphic_invoke_(polymorphic_invoke) {
+  if (invoker_storage) {
+    invoker_storage_.swap(*invoker_storage);
+  }
+}
+
+CallbackBase::~CallbackBase() {
+}
+
+}  // namespace base
+}  // namespace internal