Remove unnecessary zoom argument from GetImage() as its value is always available through the Layou…

third_party/WebKit/Source/core/layout/LayoutImageResource.h

 /*
  * Copyright (C) 1999 Lars Knoll <knoll@kde.org>
  * Copyright (C) 1999 Antti Koivisto <koivisto@kde.org>
  * Copyright (C) 2006 Allan Sandfeld Jensen <kde@carewolf.com>
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 35 matching lines @@
   virtual void Initialize(LayoutObject*);
   virtual void Shutdown();
 
   void SetImageResource(ImageResourceContent*);
   ImageResourceContent* CachedImage() const { return cached_image_.Get(); }
   virtual bool HasImage() const { return cached_image_; }
 
   void ResetAnimation();
   bool MaybeAnimated() const;
 
-  virtual PassRefPtr<Image> GetImage(const IntSize&, float) const;
+  virtual PassRefPtr<Image> GetImage(const IntSize&) const;
   virtual bool ErrorOccurred() const {
     return cached_image_ && cached_image_->ErrorOccurred();
   }
 
   virtual bool ImageHasRelativeSize() const {
     return cached_image_ ? cached_image_->ImageHasRelativeSize() : false;
   }
 
   virtual LayoutSize ImageSize(float multiplier) const;
 
   virtual WrappedImagePtr ImagePtr() const { return cached_image_.Get(); }
 
   DEFINE_INLINE_VIRTUAL_TRACE() { visitor->Trace(cached_image_); }
 
  protected:
   LayoutImageResource();
   LayoutObject* layout_object_;
   Member<ImageResourceContent> cached_image_;
 };
 
 }  // namespace blink
 
 #endif  // LayoutImage_h