binding: Indexed property returns undefined if out-of-range.

third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp

Index: third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp
diff --git a/third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp b/third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp
index 46a74fc735e064abbe17b478bb66fab3dbb1956b..c69ba0f8846427fb45eb5d908379f2dded21b276 100644
--- a/third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp
+++ b/third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp
@@ -776,9 +776,14 @@ static void indexedPropertyGetter(uint32_t index, const v8::PropertyCallbackInfo
 {
     TestInterface5Implementation* impl = V8TestInterface5::toImpl(info.Holder());
 
+    // We assume that all the implementations support length() method, although
+    // the spec doesn't require that length() must exist.  It's okay that
+    // the interface does not have length attribute as long as the
+    // implementation supports length() member function.
+    if (index >= impl->length())
+        return;  // Returns undefined due to out-of-range.
+
     String result = impl->anonymousIndexedGetter(index);
-    if (result.isNull())
-        return;
     v8SetReturnValueString(info, result, info.GetIsolate());
 }