[Variables] Enable get/setProperty and similar APIs from the CSSOM

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

Index: third_party/WebKit/Source/core/css/CSSStyleDeclaration.h
diff --git a/third_party/WebKit/Source/core/css/CSSStyleDeclaration.h b/third_party/WebKit/Source/core/css/CSSStyleDeclaration.h
index 26ac96db1b4a2b16936e819ecd9d03bb690092e3..808fc944b0205ab9c9af9731ff9265d14a8286fb 100644
--- a/third_party/WebKit/Source/core/css/CSSStyleDeclaration.h
+++ b/third_party/WebKit/Source/core/css/CSSStyleDeclaration.h
@@ -53,7 +53,7 @@ public:
     }
     void setCSSFloat(const String& value, ExceptionState& exceptionState)
     {
-        setPropertyInternal(CSSPropertyFloat, value, false, exceptionState);
+        setPropertyInternal(CSSPropertyFloat, String(), value, false, exceptionState);
     }
     virtual String cssText() const = 0;
     virtual void setCSSText(const String&, ExceptionState&) = 0;
@@ -71,7 +71,7 @@ public:
     // The CSSValue returned by this function should not be exposed to the web as it may be used by multiple documents at the same time.
     virtual PassRefPtrWillBeRawPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID) = 0;
     virtual String getPropertyValueInternal(CSSPropertyID) = 0;
-    virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionState&) = 0;
+    virtual void setPropertyInternal(CSSPropertyID, const String& propertyValue, const String& value, bool important, ExceptionState&) = 0;
 
     virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const = 0;
     virtual CSSStyleSheet* parentStyleSheet() const { return 0; }