Disallow setting invalid values for registered properties via CSSOM

third_party/WebKit/Source/core/css/CSSComputedStyleDeclaration.h

Index: third_party/WebKit/Source/core/css/CSSComputedStyleDeclaration.h
diff --git a/third_party/WebKit/Source/core/css/CSSComputedStyleDeclaration.h b/third_party/WebKit/Source/core/css/CSSComputedStyleDeclaration.h
index 9a67d5d95471403920880f7c0d22751f968cdb5c..e66487bf60378ee434238ed8eb5ea588320e2f41 100644
--- a/third_party/WebKit/Source/core/css/CSSComputedStyleDeclaration.h
+++ b/third_party/WebKit/Source/core/css/CSSComputedStyleDeclaration.h
@@ -87,7 +87,8 @@ class CORE_EXPORT CSSComputedStyleDeclaration final
   String getPropertyPriority(const String& propertyName) override;
   String getPropertyShorthand(const String& propertyName) override;
   bool isPropertyImplicit(const String& propertyName) override;
-  void setProperty(const String& propertyName,
+  void setProperty(const ExecutionContext*,
+                   const String& propertyName,
                    const String& value,
                    const String& priority,
                    ExceptionState&) override;
@@ -104,6 +105,7 @@ class CORE_EXPORT CSSComputedStyleDeclaration final
                            const String& customPropertyName,
                            const String& value,
                            bool important,
+                           const ExecutionContext*,
                            ExceptionState&) override;
 
   bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const override;