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

third_party/WebKit/Source/core/css/cssom/CSSTransformValue.cpp

 // 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.
 
 #include "core/css/cssom/CSSTransformValue.h"
 
 #include "core/css/CSSValueList.h"
 #include "core/css/cssom/CSSTransformComponent.h"
 
 namespace blink {
@@ skipping 19 matching lines @@
     if (!transform_components_[i]->is2D()) {
       return false;
     }
   }
   return true;
 }
 
 const CSSValue* CSSTransformValue::ToCSSValue() const {
   CSSValueList* transform_css_value = CSSValueList::CreateSpaceSeparated();
   for (size_t i = 0; i < transform_components_.size(); i++) {
-    transform_css_value->Append(*transform_components_[i]->ToCSSValue());
+    const CSSValue* component = transform_components_[i]->ToCSSValue();
+    // TODO(meade): Remove this check once numbers and lengths are rewritten.
+    if (!component)
+      return nullptr;
+    transform_css_value->Append(*component);
   }
   return transform_css_value;
 }
 
 }  // namespace blink