Implement CSSPaintValue and add a layout test.

third_party/WebKit/Source/modules/csspaint/CSSPaintDefinition.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 CSSPaintDefinition_h
 #define CSSPaintDefinition_h
 
 #include "bindings/core/v8/ScopedPersistent.h"
 #include "core/CSSPropertyNames.h"
 #include "core/css/CSSSyntaxDescriptor.h"
+#include "core/css/cssom/CSSStyleValue.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/heap/Handle.h"
 #include "v8/include/v8.h"
 
 namespace blink {
 
 class Image;
 class LayoutObject;
 class ScriptState;
 
@@ skipping 12 matching lines @@
       Vector<CSSSyntaxDescriptor>& inputArgumentTypes,
       bool hasAlpha);
   virtual ~CSSPaintDefinition();
 
   // Invokes the javascript 'paint' callback on an instance of the javascript
   // class. The size given will be the size of the PaintRenderingContext2D
   // given to the callback.
   //
   // This may return a nullptr (representing an invalid image) if javascript
   // throws an error.
-  PassRefPtr<Image> paint(const LayoutObject&, const IntSize&, float zoom);
+  PassRefPtr<Image> paint(const LayoutObject&,
+                          const IntSize&,
+                          float zoom,
+                          const CSSStyleValueVector*);
   const Vector<CSSPropertyID>& nativeInvalidationProperties() const {
     return m_nativeInvalidationProperties;
   }
   const Vector<AtomicString>& customInvalidationProperties() const {
     return m_customInvalidationProperties;
   }
   const Vector<CSSSyntaxDescriptor>& inputArgumentTypes() const {
     return m_inputArgumentTypes;
   }
   bool hasAlpha() const { return m_hasAlpha; }
@@ skipping 33 matching lines @@
   Vector<CSSPropertyID> m_nativeInvalidationProperties;
   Vector<AtomicString> m_customInvalidationProperties;
   // Input argument types, if applicable.
   Vector<CSSSyntaxDescriptor> m_inputArgumentTypes;
   bool m_hasAlpha;
 };
 
 }  // namespace blink
 
 #endif  // CSSPaintDefinition_h