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

third_party/WebKit/Source/core/style/StyleFetchedImageSet.cpp

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 97 matching lines @@
 }
 
 void StyleFetchedImageSet::AddClient(LayoutObject* layout_object) {
   best_fit_image_->AddObserver(layout_object);
 }
 
 void StyleFetchedImageSet::RemoveClient(LayoutObject* layout_object) {
   best_fit_image_->RemoveObserver(layout_object);
 }
 
-PassRefPtr<Image> StyleFetchedImageSet::GetImage(const LayoutObject&,
-                                                 const IntSize& container_size,
-                                                 float zoom) const {
+PassRefPtr<Image> StyleFetchedImageSet::GetImage(
+    const LayoutObject& obj,
+    const IntSize& container_size) const {
   if (!best_fit_image_->GetImage()->IsSVGImage())
     return best_fit_image_->GetImage();
 
   return SVGImageForContainer::Create(ToSVGImage(best_fit_image_->GetImage()),
-                                      container_size, zoom, url_);
+                                      container_size,
+                                      obj.StyleRef().EffectiveZoom(), url_);
 }
 
 bool StyleFetchedImageSet::KnownToBeOpaque(
     const LayoutObject& layout_object) const {
   TRACE_EVENT1(
       TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "PaintImage", "data",
       InspectorPaintImageEvent::Data(&layout_object, *best_fit_image_.Get()));
   return best_fit_image_->GetImage()->CurrentFrameKnownToBeOpaque(
       Image::kPreCacheMetadata);
 }
 
 DEFINE_TRACE(StyleFetchedImageSet) {
   visitor->Trace(best_fit_image_);
   visitor->Trace(image_set_value_);
   StyleImage::Trace(visitor);
 }
 
 }  // namespace blink