[CSS Typed OM] Delete obsolete number and length classes from Typed OM

third_party/WebKit/Source/core/css/cssom/CSSTransformComponent.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 CSSTransformComponent_h
 #define CSSTransformComponent_h
 
 #include "core/CoreExport.h"
 #include "core/css/CSSFunctionValue.h"
 #include "platform/bindings/ScriptWrappable.h"
@@ skipping 32 matching lines @@
            transform_type != kScale3DType &&
            transform_type != kTranslation3DType;
   }
 
   virtual ~CSSTransformComponent() {}
 
   virtual TransformComponentType GetType() const = 0;
 
   bool is2D() const { return Is2DComponentType(GetType()); }
 
-  String toString() const { return ToCSSValue()->CssText(); }
+  virtual String toString() const {
+    const CSSValue* result = ToCSSValue();
+    // TODO(meade): Remove this once all the number and length types are
+    // rewritten.
+    return result ? result->CssText() : "";
+  }
 
   virtual CSSFunctionValue* ToCSSValue() const = 0;
   virtual CSSMatrixComponent* asMatrix() const = 0;
 
   DEFINE_INLINE_VIRTUAL_TRACE() {}
 
  protected:
   CSSTransformComponent() = default;
 };
 
 }  // namespace blink
 
 #endif