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

third_party/WebKit/Source/bindings/tests/results/core/V8TestInterface.cpp

 // Copyright 2014 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.
 
 // This file has been auto-generated by code_generator_v8.py. DO NOT MODIFY!
 
 #include "V8TestInterface.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/PrivateScriptRunner.h"
@@ skipping 1858 matching lines @@
         return v8SetReturnValueBool(info, result == DeleteSuccess);
 }
 
 static void indexedPropertyDeleterCallback(uint32_t index, const v8::PropertyCallbackInfo<v8::Boolean>& info)
 {
     TestInterfaceImplementationV8Internal::indexedPropertyDeleter(index, info);
 }
 
 static void namedPropertyGetter(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
+    if (!name->IsString())
+        return;
     auto nameString = name.As<v8::String>();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     AtomicString propertyName = toCoreAtomicString(nameString);
     String result = impl->anonymousNamedGetter(propertyName);
     if (result.isNull())
         return;
     v8SetReturnValueString(info, result, info.GetIsolate());
 }
 
 static void namedPropertyGetterCallback(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TestInterfaceImplementationV8Internal::namedPropertyGetter(name, info);
 }
 
 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>();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     V8StringResource<> propertyName(nameString);
     if (!propertyName.prepare())
         return;
     V8StringResource<> propertyValue = v8Value;
     if (!propertyValue.prepare())
         return;
     bool result = impl->anonymousNamedSetter(propertyName, propertyValue);
     if (!result)
         return;
     v8SetReturnValue(info, v8Value);
 }
 
 static void namedPropertySetterCallback(v8::Local<v8::Name> name, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TestInterfaceImplementationV8Internal::namedPropertySetter(name, v8Value, info);
 }
 
 static void namedPropertyQuery(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Integer>& info)
 {
+    if (!name->IsString())
+        return;
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     AtomicString propertyName = toCoreAtomicString(name.As<v8::String>());
     v8::String::Utf8Value namedProperty(name);
     ExceptionState exceptionState(ExceptionState::GetterContext, *namedProperty, "TestInterface", info.Holder(), info.GetIsolate());
     bool result = impl->namedPropertyQuery(propertyName, exceptionState);
     if (exceptionState.throwIfNeeded())
         return;
     if (!result)
         return;
     v8SetReturnValueInt(info, v8::None);
 }
 
 static void namedPropertyQueryCallback(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Integer>& info)
 {
     TestInterfaceImplementationV8Internal::namedPropertyQuery(name, info);
 }
 
 static void namedPropertyDeleter(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Boolean>& info)
 {
+    if (!name->IsString())
+        return;
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     AtomicString propertyName = toCoreAtomicString(name.As<v8::String>());
     DeleteResult result = impl->anonymousNamedDeleter(propertyName);
     if (result != DeleteUnknownProperty)
         return v8SetReturnValueBool(info, result == DeleteSuccess);
 }
 
 static void namedPropertyDeleterCallback(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Boolean>& info)
 {
     TestInterfaceImplementationV8Internal::namedPropertyDeleter(name, info);
@@ skipping 416 matching lines @@
 {
     TestInterfaceImplementationV8Internal::partial2VoidMethodMethodForPartialInterface = method;
 }
 
 void V8TestInterface::registerPartial2StaticVoidMethodMethodForPartialInterface(void (*method)(const v8::FunctionCallbackInfo<v8::Value>&))
 {
     TestInterfaceImplementationV8Internal::partial2StaticVoidMethodMethodForPartialInterface = method;
 }
 
 } // namespace blink