Web Animations: Add SVGNumberInterpolationType

third_party/WebKit/Source/core/svg/SVGNumber.h

Index: third_party/WebKit/Source/core/svg/SVGNumber.h
diff --git a/third_party/WebKit/Source/core/svg/SVGNumber.h b/third_party/WebKit/Source/core/svg/SVGNumber.h
index 19bbf8d993a08091eeb805190290cefbe1d7aab8..4cd1132f2cc3b7cd90c380a2dcc799e9ec68c08b 100644
--- a/third_party/WebKit/Source/core/svg/SVGNumber.h
+++ b/third_party/WebKit/Source/core/svg/SVGNumber.h
@@ -72,12 +72,7 @@ protected:
     float m_value;
 };
 
-inline PassRefPtrWillBeRawPtr<SVGNumber> toSVGNumber(PassRefPtrWillBeRawPtr<SVGPropertyBase> passBase)
-{
-    RefPtrWillBeRawPtr<SVGPropertyBase> base = passBase;
-    ASSERT(base->type() == SVGNumber::classType());
-    return static_pointer_cast<SVGNumber>(base.release());
-}
+DEFINE_SVG_PROPERTY_TYPE_CASTS(SVGNumber);
 
 // SVGNumber which also accepts percentage as its value.
 // This is used for <stop> "offset"