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

third_party/WebKit/Source/core/css/cssom/CSSTranslation.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/CSSTranslation.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/cssom/CSSNumericValue.h"
 
 namespace blink {
 
 CSSTranslation* CSSTranslation::Create(CSSNumericValue* x,
                                        CSSNumericValue* y,
                                        CSSNumericValue* z,
                                        ExceptionState& exception_state) {
-  if (z->ContainsPercent()) {
+  if ((x->GetType() != CSSStyleValue::StyleValueType::kLengthType &&
+       x->GetType() != CSSStyleValue::StyleValueType::kPercentType) ||
+      (y->GetType() != CSSStyleValue::StyleValueType::kLengthType &&
+       y->GetType() != CSSStyleValue::StyleValueType::kPercentType)) {
+    exception_state.ThrowTypeError(
+        "Must pass length or percentage to X and Y of CSSTranslation");
+    return nullptr;
+  }
+  if (z && z->GetType() != CSSStyleValue::StyleValueType::kLengthType) {
+    exception_state.ThrowTypeError("Must pass length to Z of CSSTranslation");
+    return nullptr;
+  }
+  if (z && z->ContainsPercent()) {
     exception_state.ThrowTypeError(
         "CSSTranslation does not support z CSSNumericValue with percent units");
     return nullptr;
   }
   return new CSSTranslation(x, y, z);
 }
 
 CSSFunctionValue* CSSTranslation::ToCSSValue() const {
   CSSFunctionValue* result = CSSFunctionValue::Create(
       Is2D() ? CSSValueTranslate : CSSValueTranslate3d);
   result->Append(*x_->ToCSSValue());
   result->Append(*y_->ToCSSValue());
   if (!Is2D())
     result->Append(*z_->ToCSSValue());
   return result;
 }
 
 }  // namespace blink