Always check that a Name is a String before converting it.

third_party/WebKit/Source/bindings/tests/results/core/V8TestObject.cpp

Index: third_party/WebKit/Source/bindings/tests/results/core/V8TestObject.cpp
diff --git a/third_party/WebKit/Source/bindings/tests/results/core/V8TestObject.cpp b/third_party/WebKit/Source/bindings/tests/results/core/V8TestObject.cpp
index 77d03b01d6b5d95ba7f39619f07a2ff1c6a1a350..c5b0f35d26bd9ea0792a46940e53464f0706d289 100644
--- a/third_party/WebKit/Source/bindings/tests/results/core/V8TestObject.cpp
+++ b/third_party/WebKit/Source/bindings/tests/results/core/V8TestObject.cpp
@@ -11361,6 +11361,8 @@ static void indexedPropertyDeleterCallback(uint32_t index, const v8::PropertyCal
 
 static void namedPropertyGetter(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
+    if (!name->IsString())
+        return;
     auto nameString = name.As<v8::String>();
     TestObject* impl = V8TestObject::toImpl(info.Holder());
     AtomicString propertyName = toCoreAtomicString(nameString);
@@ -11378,6 +11380,8 @@ static void namedPropertyGetterCallback(v8::Local<v8::Name> name, const v8::Prop
 
 static void namedPropertySetter(v8::Local<v8::Name> name, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
+    if (!name->IsString())
+        return;
     auto nameString = name.As<v8::String>();
     TestObject* impl = V8TestObject::toImpl(info.Holder());
     V8StringResource<> propertyName(nameString);
@@ -11400,6 +11404,8 @@ static void namedPropertySetterCallback(v8::Local<v8::Name> name, v8::Local<v8::
 
 static void namedPropertyQuery(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Integer>& info)
 {
+    if (!name->IsString())
+        return;
     TestObject* impl = V8TestObject::toImpl(info.Holder());
     AtomicString propertyName = toCoreAtomicString(name.As<v8::String>());
     v8::String::Utf8Value namedProperty(name);
@@ -11420,6 +11426,8 @@ static void namedPropertyQueryCallback(v8::Local<v8::Name> name, const v8::Prope
 
 static void namedPropertyDeleter(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Boolean>& info)
 {
+    if (!name->IsString())
+        return;
     TestObject* impl = V8TestObject::toImpl(info.Holder());
     AtomicString propertyName = toCoreAtomicString(name.As<v8::String>());
     ScriptState* scriptState = ScriptState::current(info.GetIsolate());