Remove deprecated gfx::Image::operator NSImage*().

ui/gfx/image/image.cc

 // 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.
 
 #include "ui/gfx/image/image.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 537 matching lines @@
 #endif
 
 #if defined(OS_MACOSX)
 NSImage* Image::CopyNSImage() const {
   NSImage* image = ToNSImage();
   base::mac::NSObjectRetain(image);
   return image;
 }
 #endif
 
-#if defined(OS_MACOSX)
-Image::operator NSImage*() const {
-  return ToNSImage();
-}
-#endif
-
 bool Image::HasRepresentation(RepresentationType type) const {
   return storage_.get() && storage_->representations().count(type) != 0;
 }
 
 size_t Image::RepresentationCount() const {
   if (!storage_.get())
     return 0;
 
   return storage_->representations().size();
 }
@@ skipping 25 matching lines @@
   }
   return it->second;
 }
 
 void Image::AddRepresentation(internal::ImageRep* rep) const {
   CHECK(storage_.get());
   storage_->representations().insert(std::make_pair(rep->type(), rep));
 }
 
 }  // namespace gfx