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

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

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 51 matching lines @@
 void StyleGeneratedImage::AddClient(LayoutObject* layout_object) {
   image_generator_value_->AddClient(layout_object, IntSize());
 }
 
 void StyleGeneratedImage::RemoveClient(LayoutObject* layout_object) {
   image_generator_value_->RemoveClient(layout_object);
 }
 
 PassRefPtr<Image> StyleGeneratedImage::GetImage(
     const LayoutObject& layout_object,
-    const IntSize& size,
-    float zoom) const {
-  return image_generator_value_->GetImage(layout_object, size, zoom);
+    const IntSize& size) const {
+  return image_generator_value_->GetImage(layout_object, size);
 }
 
 bool StyleGeneratedImage::KnownToBeOpaque(
     const LayoutObject& layout_object) const {
   return image_generator_value_->KnownToBeOpaque(layout_object);
 }
 
 DEFINE_TRACE(StyleGeneratedImage) {
   visitor->Trace(image_generator_value_);
   StyleImage::Trace(visitor);
 }
 
 }  // namespace blink