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

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

Index: third_party/WebKit/Source/core/css/cssom/CSSTranslation.cpp
diff --git a/third_party/WebKit/Source/core/css/cssom/CSSTranslation.cpp b/third_party/WebKit/Source/core/css/cssom/CSSTranslation.cpp
index 1d64903e34a52be52fbbb1daedf40a1ada27fbea..1f40792af34d24fa7cb60865d67c2fb58222ecda 100644
--- a/third_party/WebKit/Source/core/css/cssom/CSSTranslation.cpp
+++ b/third_party/WebKit/Source/core/css/cssom/CSSTranslation.cpp
@@ -14,7 +14,19 @@ 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;