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

third_party/WebKit/Source/core/style/StyleInvalidImage.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef StyleInvalidImage_h
 #define StyleInvalidImage_h
 
 #include "core/css/CSSImageValue.h"
 #include "core/style/StyleImage.h"
 
@@ skipping 16 matching lines @@
   LayoutSize ImageSize(const LayoutObject&,
                        float /*multiplier*/,
                        const LayoutSize& /*defaultObjectSize*/) const override {
     return LayoutSize();
   }
   bool ImageHasRelativeSize() const override { return false; }
   bool UsesImageContainerSize() const override { return false; }
   void AddClient(LayoutObject*) override {}
   void RemoveClient(LayoutObject*) override {}
   PassRefPtr<Image> GetImage(const LayoutObject&,
-                             const IntSize&,
-                             float) const override {
+                             const IntSize&) const override {
     return nullptr;
   }
   bool KnownToBeOpaque(const LayoutObject&) const override { return false; }
 
   DEFINE_INLINE_VIRTUAL_TRACE() { StyleImage::Trace(visitor); }
 
  private:
   explicit StyleInvalidImage(const String& url) : url_(url) {
     is_invalid_image_ = true;
   }
 
   String url_;
 };
 
 DEFINE_STYLE_IMAGE_TYPE_CASTS(StyleInvalidImage, IsInvalidImage());
 
 }  // namespace blink
 #endif