Move files in wtf/ to platform/wtf/ (Part 9).

third_party/WebKit/Source/wtf/text/StringImplMac.mm

-/*
- * Copyright (C) 2006, 2009 Apple Inc. All rights reserved.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#include "wtf/text/StringImpl.h"
-
-#import <CoreFoundation/CFBase.h>
-#import <Foundation/NSObject.h>
-#include "wtf/RetainPtr.h"
-
-namespace WTF {
-
-// Use HardAutorelease to return an object made by a CoreFoundation
-// "create" or "copy" function as an autoreleased and garbage collected
-// object. CF objects need to be "made collectable" for autorelease to work
-// properly under GC.
-
-static inline id HardAutorelease(CFTypeRef object) {
-  if (object)
-    CFMakeCollectable(object);
-  [(id)object autorelease];
-  return (id)object;
-}
-
-StringImpl::operator NSString*() {
-  return HardAutorelease(createCFString().leakRef());
-}
-
-}  // namespace WTF