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

third_party/WebKit/Source/core/css/CSSImageGeneratorValue.cpp

 /*
  * Copyright (C) 2008 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 96 matching lines @@
   return images_.at(size);
 }
 
 void CSSImageGeneratorValue::PutImage(const IntSize& size,
                                       PassRefPtr<Image> image) {
   images_.insert(size, std::move(image));
 }
 
 PassRefPtr<Image> CSSImageGeneratorValue::GetImage(
     const LayoutObject& layout_object,
-    const IntSize& size,
-    float zoom) {
+    const IntSize& size) {
   switch (GetClassType()) {
     case kCrossfadeClass:
       return ToCSSCrossfadeValue(this)->GetImage(layout_object, size);
     case kLinearGradientClass:
       return ToCSSLinearGradientValue(this)->GetImage(layout_object, size);
     case kPaintClass:
-      return ToCSSPaintValue(this)->GetImage(layout_object, size, zoom);
+      return ToCSSPaintValue(this)->GetImage(layout_object, size);
     case kRadialGradientClass:
       return ToCSSRadialGradientValue(this)->GetImage(layout_object, size);
     case kConicGradientClass:
       return ToCSSConicGradientValue(this)->GetImage(layout_object, size);
     default:
       NOTREACHED();
   }
   return nullptr;
 }
 
@@ skipping 89 matching lines @@
       break;
     case kConicGradientClass:
       ToCSSConicGradientValue(this)->LoadSubimages(document);
       break;
     default:
       NOTREACHED();
   }
 }
 
 }  // namespace blink