[CSS Typed OM] Add missing error handling in the CSSTranslation constructor

third_party/WebKit/Source/core/css/cssom/CSSTranslation.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 CSSTranslation_h
 #define CSSTranslation_h
 
 #include "core/css/cssom/CSSTransformComponent.h"
 
 namespace blink {
 
 class CSSNumericValue;
 class DOMMatrix;
 class ExceptionState;
 
 // Represents a translation value in a CSSTransformValue used for properties
 // like "transform".
 // See CSSTranslation.idl for more information about this class.
 class CORE_EXPORT CSSTranslation final : public CSSTransformComponent {
   WTF_MAKE_NONCOPYABLE(CSSTranslation);
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   // Constructors defined in the IDL.
   static CSSTranslation* Create(CSSNumericValue* x,
                                 CSSNumericValue* y,
-                                ExceptionState&) {
-    return new CSSTranslation(x, y, nullptr);
-  }
+                                CSSNumericValue* z,
+                                ExceptionState&);
   static CSSTranslation* Create(CSSNumericValue* x,
                                 CSSNumericValue* y,
-                                CSSNumericValue* z,
-                                ExceptionState&);
+                                ExceptionState& exception_state) {
+    return Create(x, y, nullptr, exception_state);
+  }
 
   // Blink-internal ways of creating CSSTranslations.
   static CSSTranslation* FromCSSValue(const CSSFunctionValue& value) {
     return nullptr;
   }
 
   // Getters and setters for attributes defined in the IDL.
   CSSNumericValue* x() const { return x_; }
   CSSNumericValue* y() const { return y_; }
   CSSNumericValue* z() const { return z_; }
@@ skipping 20 matching lines @@
   bool Is2D() const { return !z_; }
 
   Member<CSSNumericValue> x_;
   Member<CSSNumericValue> y_;
   Member<CSSNumericValue> z_;
 };
 
 }  // namespace blink
 
 #endif