Move scoped_cftyperef from base to base/mac, use the new namespace, and name ...

base/scoped_cftyperef.h

Index: base/scoped_cftyperef.h
===================================================================
--- base/scoped_cftyperef.h	(revision 62861)
+++ base/scoped_cftyperef.h	(working copy)
@@ -1,80 +0,0 @@
-// Copyright (c) 2006-2008 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_SCOPED_CFTYPEREF_H_
-#define BASE_SCOPED_CFTYPEREF_H_
-#pragma once
-
-#include <CoreFoundation/CoreFoundation.h>
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-
-// scoped_cftyperef<> is patterned after scoped_ptr<>, but maintains ownership
-// of a CoreFoundation object: any object that can be represented as a
-// CFTypeRef.  Style deviations here are solely for compatibility with
-// scoped_ptr<>'s interface, with which everyone is already familiar.
-//
-// When scoped_cftyperef<> takes ownership of an object (in the constructor or
-// in reset()), it takes over the caller's existing ownership claim.  The
-// caller must own the object it gives to scoped_cftyperef<>, and relinquishes
-// an ownership claim to that object.  scoped_cftyperef<> does not call
-// CFRetain().
-template<typename CFT>
-class scoped_cftyperef {
- public:
-  typedef CFT element_type;
-
-  explicit scoped_cftyperef(CFT object = NULL)
-      : object_(object) {
-  }
-
-  ~scoped_cftyperef() {
-    if (object_)
-      CFRelease(object_);
-  }
-
-  void reset(CFT object = NULL) {
-    if (object_)
-      CFRelease(object_);
-    object_ = object;
-  }
-
-  bool operator==(CFT that) const {
-    return object_ == that;
-  }
-
-  bool operator!=(CFT that) const {
-    return object_ != that;
-  }
-
-  operator CFT() const {
-    return object_;
-  }
-
-  CFT get() const {
-    return object_;
-  }
-
-  void swap(scoped_cftyperef& that) {
-    CFT temp = that.object_;
-    that.object_ = object_;
-    object_ = temp;
-  }
-
-  // scoped_cftyperef<>::release() is like scoped_ptr<>::release.  It is NOT
-  // a wrapper for CFRelease().  To force a scoped_cftyperef<> object to call
-  // CFRelease(), use scoped_cftyperef<>::reset().
-  CFT release() WARN_UNUSED_RESULT {
-    CFT temp = object_;
-    object_ = NULL;
-    return temp;
-  }
-
- private:
-  CFT object_;
-
-  DISALLOW_COPY_AND_ASSIGN(scoped_cftyperef);
-};
-
-#endif  // BASE_SCOPED_CFTYPEREF_H_