Split BindStateBase ctor for non-cancellable Bind

base/callback_internal.cc

 // Copyright (c) 2012 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"
 
 #include "base/logging.h"
 
 namespace base {
 namespace internal {
 
+namespace {
+
+bool ReturnFalse(const BindStateBase*) {
+  return false;
+}
+
+}  // namespace
+
+BindStateBase::BindStateBase(InvokeFuncStorage polymorphic_invoke,
+                             void (*destructor)(BindStateBase*))
+    : BindStateBase(polymorphic_invoke, destructor, &ReturnFalse) {
+}
+
 BindStateBase::BindStateBase(InvokeFuncStorage polymorphic_invoke,
                              void (*destructor)(BindStateBase*),
                              bool (*is_cancelled)(const BindStateBase*))
-      : polymorphic_invoke_(polymorphic_invoke),
-        ref_count_(0),
-        destructor_(destructor),
-        is_cancelled_(is_cancelled) {}
+    : polymorphic_invoke_(polymorphic_invoke),
+      ref_count_(0),
+      destructor_(destructor),
+      is_cancelled_(is_cancelled) {}
 
 void BindStateBase::AddRef() {
   AtomicRefCountInc(&ref_count_);
 }
 
 void BindStateBase::Release() {
   if (!AtomicRefCountDec(&ref_count_))
     destructor_(this);
 }
 
@@ skipping 51 matching lines @@
 }
 
 CallbackBase<CopyMode::Copyable>&
 CallbackBase<CopyMode::Copyable>::operator=(CallbackBase&& c) = default;
 
 template class CallbackBase<CopyMode::MoveOnly>;
 template class CallbackBase<CopyMode::Copyable>;
 
 }  // namespace internal
 }  // namespace base