Implement custom element construction and some 'define' checks

third_party/WebKit/Source/bindings/core/v8/ScopedPersistent.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 54 matching lines @@
     {
         return v8::Local<T>::New(isolate, m_handle);
     }
 
     template<typename P>
     void setWeak(P* parameters, void (*callback)(const v8::WeakCallbackInfo<P>&), v8::WeakCallbackType type = v8::WeakCallbackType::kParameter)
     {
         m_handle.SetWeak(parameters, callback, type);
     }
 
+    void setWeak()
+    {
+        m_handle.SetWeak();
+    }
+
     void clearWeak()
     {
         m_handle.template ClearWeak<void>();
     }
 
     bool isEmpty() const { return m_handle.IsEmpty(); }
     bool isWeak() const { return m_handle.IsWeak(); }
 
     void set(v8::Isolate* isolate, v8::Local<T> handle)
     {
         m_handle.Reset(isolate, handle);
     }
 
     // Note: This is clear in the OwnPtr sense, not the v8::Handle sense.
     void clear()
     {
         m_handle.Reset();
     }
 
-    void setReference(const v8::Persistent<v8::Object>& parent, v8::Isolate* isolate)
+    void setReference(const v8::Persistent<v8::Object>& parent, v8::Isolate* isolate) const
     {
         isolate->SetReference(parent, m_handle);
     }
 
     bool operator==(const ScopedPersistent<T>& other)
     {
         return m_handle == other.m_handle;
     }
 
     template <class S>
@@ skipping 10 matching lines @@
     {
         return m_handle;
     }
 
     v8::Persistent<T> m_handle;
 };
 
 } // namespace blink
 
 #endif // ScopedPersistent_h