Fix zoom in CSS paint worklets

third_party/WebKit/Source/core/css/CSSPaintImageGenerator.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 CSSPaintImageGenerator_h
 #define CSSPaintImageGenerator_h
 
 #include "core/CSSPropertyNames.h"
 #include "core/CoreExport.h"
 #include "platform/geometry/IntSize.h"
@@ skipping 21 matching lines @@
     };
 
     static CSSPaintImageGenerator* create(const String& name, Document&, Observer*);
     virtual ~CSSPaintImageGenerator();
 
     typedef CSSPaintImageGenerator* (*CSSPaintImageGeneratorCreateFunction)(const String&, Document&, Observer*);
     static void init(CSSPaintImageGeneratorCreateFunction);
 
     // Invokes the CSS Paint API 'paint' callback. May return a nullptr
     // representing an invalid image if an error occurred.
-    virtual PassRefPtr<Image> paint(const LayoutObject&, const IntSize&) = 0;
+    virtual PassRefPtr<Image> paint(const LayoutObject&, const IntSize&, float zoom) = 0;
 
     virtual const Vector<CSSPropertyID>& nativeInvalidationProperties() const = 0;
     virtual const Vector<AtomicString>& customInvalidationProperties() const = 0;
 
     DEFINE_INLINE_VIRTUAL_TRACE() { }
 };
 
 } // namespace blink
 
 #endif // CSSPaintImageGenerator_h