Start BindStateBase ref count from 1 instead of 0

base/memory/ref_counted.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/memory/ref_counted.h"
 
 #include "base/threading/thread_collision_warner.h"
 
 namespace base {
 namespace {
 
 #if DCHECK_IS_ON()
 AtomicRefCount g_cross_thread_ref_count_access_allow_count = 0;
 #endif
 
 }  // namespace
 
 namespace subtle {
 
 bool RefCountedThreadSafeBase::HasOneRef() const {
   return AtomicRefCountIsOne(&ref_count_);
 }
 
-RefCountedThreadSafeBase::RefCountedThreadSafeBase() = default;
-
 RefCountedThreadSafeBase::~RefCountedThreadSafeBase() {
 #if DCHECK_IS_ON()
   DCHECK(in_dtor_) << "RefCountedThreadSafe object deleted without "
                       "calling Release()";
 #endif
 }
 
 void RefCountedThreadSafeBase::AddRef() const {
 #if DCHECK_IS_ON()
   DCHECK(!in_dtor_);
+  DCHECK(!needs_adopt_ref_)
+      << "This RefCounted object is created with non-zero reference count."
+      << " The first reference to such a object has to be made by AdoptRef or"
+      << " MakeShared.";
 #endif
   AtomicRefCountInc(&ref_count_);
 }
 
 bool RefCountedThreadSafeBase::Release() const {
 #if DCHECK_IS_ON()
   DCHECK(!in_dtor_);
   DCHECK(!AtomicRefCountIsZero(&ref_count_));
 #endif
   if (!AtomicRefCountDec(&ref_count_)) {
@@ skipping 18 matching lines @@
 ScopedAllowCrossThreadRefCountAccess::ScopedAllowCrossThreadRefCountAccess() {
   AtomicRefCountInc(&g_cross_thread_ref_count_access_allow_count);
 }
 
 ScopedAllowCrossThreadRefCountAccess::~ScopedAllowCrossThreadRefCountAccess() {
   AtomicRefCountDec(&g_cross_thread_ref_count_access_allow_count);
 }
 #endif
 
 }  // namespace base