Removed local RefPtr objects created from PassRefPtr arguments.

third_party/WebKit/Source/core/frame/ImageBitmap.h

 // Copyright 2013 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 ImageBitmap_h
 #define ImageBitmap_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/html/HTMLImageElement.h"
@@ skipping 133 matching lines @@
               const ImageBitmapOptions&);
   ImageBitmap(HTMLVideoElement*,
               Optional<IntRect>,
               Document*,
               const ImageBitmapOptions&);
   ImageBitmap(HTMLCanvasElement*, Optional<IntRect>, const ImageBitmapOptions&);
   ImageBitmap(OffscreenCanvas*, Optional<IntRect>, const ImageBitmapOptions&);
   ImageBitmap(ImageData*, Optional<IntRect>, const ImageBitmapOptions&);
   ImageBitmap(ImageBitmap*, Optional<IntRect>, const ImageBitmapOptions&);
   ImageBitmap(PassRefPtr<StaticBitmapImage>);
-  ImageBitmap(PassRefPtr<StaticBitmapImage>,
+  ImageBitmap(RefPtr<StaticBitmapImage>,
               Optional<IntRect>,
               const ImageBitmapOptions&);
   ImageBitmap(const void* pixel_data,
               uint32_t width,
               uint32_t height,
               bool is_image_bitmap_premultiplied,
               bool is_image_bitmap_origin_clean);
 
   RefPtr<StaticBitmapImage> image_;
   bool is_neutered_ = false;
 };
 
 }  // namespace blink
 
 #endif  // ImageBitmap_h