bindings: Introduces type-check for the internal pointers.

Source/bindings/templates/interface.h

 // 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}}. DO NOT MODIFY!
 
 #ifndef {{v8_class}}_h
 #define {{v8_class}}_h
 
 {% filter conditional(conditional_string) %}
@@ skipping 29 matching lines @@
         {% endif %}
         {% endfor %}
     };
 
     {% endif %}
     static bool hasInstance(v8::Handle<v8::Value>, v8::Isolate*);
     static v8::Handle<v8::Object> findInstanceInPrototypeChain(v8::Handle<v8::Value>, v8::Isolate*);
     static v8::Handle<v8::FunctionTemplate> domTemplate(v8::Isolate*);
     static {{cpp_class}}* toNative(v8::Handle<v8::Object> object)
     {
-        return fromInternalPointer(object->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex));
+        return fromInternalPointer(blink::toInternalPointer(object));
     }
     static {{cpp_class}}* toNativeWithTypeCheck(v8::Isolate*, v8::Handle<v8::Value>);
     static const WrapperTypeInfo wrapperTypeInfo;
-    static void derefObject(void*);
+    static void derefObject(ScriptWrappableBase* internalPointer);
     {% if has_visit_dom_wrapper %}
-    static void visitDOMWrapper(void*, const v8::Persistent<v8::Object>&, v8::Isolate*);
+    static void visitDOMWrapper(ScriptWrappableBase* internalPointer, const v8::Persistent<v8::Object>&, v8::Isolate*);
     {% endif %}
     {% if is_active_dom_object %}
     static ActiveDOMObject* toActiveDOMObject(v8::Handle<v8::Object>);
     {% endif %}
     {% if is_event_target %}
     static EventTarget* toEventTarget(v8::Handle<v8::Object>);
     {% endif %}
     {% if interface_name == 'Window' %}
     static v8::Handle<v8::ObjectTemplate> getShadowObjectTemplate(v8::Isolate*);
     {% endif %}
@@ skipping 72 matching lines @@
 #if ENABLE(OILPAN)
     static const int persistentHandleIndex = v8DefaultWrapperInternalFieldCount + {{custom_internal_field_counter}};
     static const int internalFieldCount = v8DefaultWrapperInternalFieldCount + {{custom_internal_field_counter}} + 1;
 #else
     static const int internalFieldCount = v8DefaultWrapperInternalFieldCount + {{custom_internal_field_counter}};
 #endif
     {% else %}
     static const int internalFieldCount = v8DefaultWrapperInternalFieldCount + {{custom_internal_field_counter}};
     {% endif %}
     {# End custom internal fields #}
-    static inline void* toInternalPointer({{cpp_class}}* impl)
+    static inline ScriptWrappableBase* toInternalPointer({{cpp_class}}* impl)
     {
         {% if parent_interface %}
         return V8{{parent_interface}}::toInternalPointer(impl);
         {% else %}
-        return impl;
+        return reinterpret_cast<ScriptWrappableBase*>(static_cast<void*>(impl));
         {% endif %}
     }
 
-    static inline {{cpp_class}}* fromInternalPointer(void* object)
+    static inline {{cpp_class}}* fromInternalPointer(ScriptWrappableBase* internalPointer)
     {
         {% if parent_interface %}
-        return static_cast<{{cpp_class}}*>(V8{{parent_interface}}::fromInternalPointer(object));
+        return static_cast<{{cpp_class}}*>(V8{{parent_interface}}::fromInternalPointer(internalPointer));
         {% else %}
-        return static_cast<{{cpp_class}}*>(object);
+        return reinterpret_cast<{{cpp_class}}*>(static_cast<void*>(internalPointer));
         {% endif %}
     }
     {% if interface_name == 'Window' %}
     static bool namedSecurityCheckCustom(v8::Local<v8::Object> host, v8::Local<v8::Value> key, v8::AccessType, v8::Local<v8::Value> data);
     static bool indexedSecurityCheckCustom(v8::Local<v8::Object> host, uint32_t index, v8::AccessType, v8::Local<v8::Value> data);
     {% endif %}
     static void installPerContextEnabledProperties(v8::Handle<v8::Object>, {{cpp_class}}*, v8::Isolate*){% if has_per_context_enabled_attributes %};
     {% else %} { }
     {% endif %}
     static void installPerContextEnabledMethods(v8::Handle<v8::Object>, v8::Isolate*){% if per_context_enabled_methods %};
@@ skipping 119 matching lines @@
     v8SetReturnValueFast(callbackInfo, impl.get(), wrappable);
 }
 
 {% if has_event_constructor %}
 bool initialize{{cpp_class}}({{cpp_class}}Init&, const Dictionary&, ExceptionState&, const v8::FunctionCallbackInfo<v8::Value>& info, const String& = "");
 
 {% endif %}
 }
 {% endfilter %}
 #endif // {{v8_class}}_h