Purge ImplementsThreadSafeReferenceCounting() from the codebase now that Task is dead.

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 <cassert>
 
 #include "base/atomic_ref_count.h"
 #include "base/base_export.h"
 #include "base/threading/thread_collision_warner.h"
 
 namespace base {
 
 namespace subtle {
 
 class BASE_EXPORT RefCountedBase {
  public:
-  static bool ImplementsThreadSafeReferenceCounting() { return false; }
-
   bool HasOneRef() const { return ref_count_ == 1; }
 
  protected:
   RefCountedBase();
   ~RefCountedBase();
 
   void AddRef() const;
 
   // Returns true if the object should self-delete.
   bool Release() const;
 
  private:
   mutable int ref_count_;
 #ifndef NDEBUG
   mutable bool in_dtor_;
 #endif
 
   DFAKE_MUTEX(add_release_);
 
   DISALLOW_COPY_AND_ASSIGN(RefCountedBase);
 };
 
 class BASE_EXPORT RefCountedThreadSafeBase {
  public:
-  static bool ImplementsThreadSafeReferenceCounting() { return true; }
-
   bool HasOneRef() const;
 
  protected:
   RefCountedThreadSafeBase();
   ~RefCountedThreadSafeBase();
 
   void AddRef() const;
 
   // Returns true if the object should self-delete.
   bool Release() const;
@@ skipping 247 matching lines @@
 };
 
 // Handy utility for creating a scoped_refptr<T> out of a T* explicitly without
 // having to retype all the template arguments
 template <typename T>
 scoped_refptr<T> make_scoped_refptr(T* t) {
   return scoped_refptr<T>(t);
 }
 
 #endif  // BASE_MEMORY_REF_COUNTED_H_