Revert of Remove ref_counted.cc

base/memory/ref_counted.h

 // 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.
 
 #ifndef BASE_MEMORY_REF_COUNTED_H_
 #define BASE_MEMORY_REF_COUNTED_H_
 
 #include <stddef.h>
 
 #include <cassert>
@@ skipping 69 matching lines @@
   mutable bool in_dtor_;
 #endif
 
   DFAKE_MUTEX(add_release_);
 
   DISALLOW_COPY_AND_ASSIGN(RefCountedBase);
 };
 
 class BASE_EXPORT RefCountedThreadSafeBase {
  public:
-  bool HasOneRef() const {
-    return AtomicRefCountIsOne(
-        &const_cast<RefCountedThreadSafeBase*>(this)->ref_count_);
-  }
+  bool HasOneRef() const;
 
  protected:
-  RefCountedThreadSafeBase() : ref_count_(0) {
-#ifndef NDEBUG
-    in_dtor_ = false;
-#endif
-  }
+  RefCountedThreadSafeBase();
+  ~RefCountedThreadSafeBase();
 
-  ~RefCountedThreadSafeBase() {
-#ifndef NDEBUG
-    DCHECK(in_dtor_) << "RefCountedThreadSafe object deleted without "
-                        "calling Release()";
-#endif
-  }
-
-  void AddRef() const {
-#ifndef NDEBUG
-    DCHECK(!in_dtor_);
-#endif
-    AtomicRefCountInc(&ref_count_);
-  }
+  void AddRef() const;
 
   // Returns true if the object should self-delete.
-  bool Release() const {
-#ifndef NDEBUG
-    DCHECK(!in_dtor_);
-    DCHECK(!AtomicRefCountIsZero(&ref_count_));
-#endif
-    if (!AtomicRefCountDec(&ref_count_)) {
-#ifndef NDEBUG
-      in_dtor_ = true;
-#endif
-      return true;
-    }
-    return false;
-  }
+  bool Release() const;
 
  private:
   mutable AtomicRefCount ref_count_;
 #ifndef NDEBUG
   mutable bool in_dtor_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(RefCountedThreadSafeBase);
 };
 
@@ skipping 343 matching lines @@
 bool operator!=(std::nullptr_t null, const scoped_refptr<T>& rhs) {
   return !operator==(null, rhs);
 }
 
 template <typename T>
 std::ostream& operator<<(std::ostream& out, const scoped_refptr<T>& p) {
   return out << p.get();
 }
 
 #endif  // BASE_MEMORY_REF_COUNTED_H_