CSS Properties & Values API: Compute initial values for transfrom-list type.

third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp

Index: third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp b/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
index 9c63a148c456bb723ac1772932202379a4fc5451..e9d644270904c077502c9d7fa63998f66e94e470 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
@@ -1419,8 +1419,18 @@ PassRefPtr<BasicShape> StyleBuilderConverter::ConvertOffsetPath(
 static const CSSValue& ComputeRegisteredPropertyValue(
     const CSSToLengthConversionData& css_to_length_conversion_data,
     const CSSValue& value) {
-  // TODO(timloh): Images and transform-function values can also contain
-  // lengths.
+  // TODO(timloh): Images values can also contain lengths.
+  if (value.IsFunctionValue()) {
+    const CSSFunctionValue& function_value = ToCSSFunctionValue(value);
+    CSSFunctionValue* new_function =
+        CSSFunctionValue::Create(function_value.FunctionType());
+    for (const CSSValue* inner_value : ToCSSValueList(value)) {
+      new_function->Append(ComputeRegisteredPropertyValue(
+          css_to_length_conversion_data, *inner_value));
+    }
+    return *new_function;
+  }
+
   if (value.IsValueList()) {
     CSSValueList* new_list = CSSValueList::CreateSpaceSeparated();
     for (const CSSValue* inner_value : ToCSSValueList(value)) {