Implement API functions for handling the AccessorDescriptor

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index fb10c71576da0a92963b4decfe4dde60067a34fb..92b8f520b318b79ecd9b6870dc1244d8ffbcaf91 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -1457,6 +1457,22 @@ class Object : public Value {
                             PropertyAttribute attribute = None);
 
   /**
+   * Defines the get/set properties of the property's
+   * AccessorDescriptor.
+   */
+  V8EXPORT bool DefineGetter(Handle<String> name, Handle<Value> fun);
+  V8EXPORT bool DefineSetter(Handle<String> name, Handle<Value> fun);
+
+  /**
+   * Returns a function which is binded to the property by the
+   * DefineGetter/Setter method.
+   * Returns undefined value if the AccessorDescriptor's get/set
+   * properties are not defined.
+   */
+  V8EXPORT Local<Value> LookupGetter(Handle<String> name);
+  V8EXPORT Local<Value> LookupSetter(Handle<String> name);
+
+  /**
    * Returns an array containing the names of the enumerable properties
    * of this object, including properties from prototype objects.  The
    * array returned by this method contains the same values as would