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

third_party/WebKit/Source/core/layout/LayoutImageResourceStyleImage.cpp

 /*
  * Copyright (C) 1999 Lars Knoll <knoll@kde.org>
  * Copyright (C) 1999 Antti Koivisto <koivisto@kde.org>
  * Copyright (C) 2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2006 Allan Sandfeld Jensen <kde@carewolf.com>
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009, 2010 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
@@ skipping 40 matching lines @@
 
   style_image_->AddClient(layout_object_);
 }
 
 void LayoutImageResourceStyleImage::Shutdown() {
   DCHECK(layout_object_);
   style_image_->RemoveClient(layout_object_);
   cached_image_ = nullptr;
 }
 
-PassRefPtr<Image> LayoutImageResourceStyleImage::GetImage(const IntSize& size,
-                                                          float zoom) const {
+PassRefPtr<Image> LayoutImageResourceStyleImage::GetImage(
+    const IntSize& size) const {
   // Generated content may trigger calls to image() while we're still pending,
   // don't assert but gracefully exit.
   if (style_image_->IsPendingImage())
     return nullptr;
-  return style_image_->GetImage(*layout_object_, size, zoom);
+  return style_image_->GetImage(*layout_object_, size);
 }
 
 LayoutSize LayoutImageResourceStyleImage::ImageSize(float multiplier) const {
   // TODO(davve): Find out the correct default object size in this context.
   return style_image_->ImageSize(*layout_object_, multiplier,
                                  LayoutSize(LayoutReplaced::kDefaultWidth,
                                             LayoutReplaced::kDefaultHeight));
 }
 
 DEFINE_TRACE(LayoutImageResourceStyleImage) {
   visitor->Trace(style_image_);
   LayoutImageResource::Trace(visitor);
 }
 
 }  // namespace blink