Revert "Revert "Dartium changes for custom element lifecycle events.""

Source/bindings/dart/DartDOMData.cpp

Index: Source/bindings/dart/DartDOMData.cpp
diff --git a/Source/bindings/dart/DartDOMData.cpp b/Source/bindings/dart/DartDOMData.cpp
index 9ae01ac8279d447d012fc19efd284c3bfa98a3f8..bb04eefb0b831cb263e9fd13267adedf3ba15790 100644
--- a/Source/bindings/dart/DartDOMData.cpp
+++ b/Source/bindings/dart/DartDOMData.cpp
@@ -86,4 +86,24 @@ PassRefPtr<ThreadSafeDartIsolateWrapper> DartDOMData::threadSafeIsolateWrapper()
     return m_threadSafeIsolateWrapper;
 }
 
+void DartDOMData::addCustomElementBinding(CustomElementDefinition* definition, PassOwnPtr<DartCustomElementBinding> binding)
+{
+    ASSERT(!m_customElementBindings.contains(definition));
+    m_customElementBindings.add(definition, binding);
+}
+
+void DartDOMData::clearCustomElementBinding(CustomElementDefinition* definition)
+{
+    DartCustomElementBindingMap::iterator it = m_customElementBindings.find(definition);
+    ASSERT(it != m_customElementBindings.end());
+    m_customElementBindings.remove(it);
+}
+
+DartCustomElementBinding* DartDOMData::customElementBinding(CustomElementDefinition* definition)
+{
+    DartCustomElementBindingMap::const_iterator it = m_customElementBindings.find(definition);
+    ASSERT(it != m_customElementBindings.end());
+    return it->value.get();
+}
+
 }