Revert of Make DOMWrapperWorld::current() return a reference instead of a pointer

Source/bindings/tests/idls/TestPartialInterfacePython.idl

 /*
  * Copyright (C) 2014 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 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 enum PartialEnumType {
     "foo",
     "bar"
 };
 
-typedef DOMString PartialString;
+typedef DOMString String;
 
-callback PartialCallbackType = void (PartialString value);
+callback PartialCallbackType = void (String value);
+
 [
     Conditional=PARTIAL_CONDITION,
     RuntimeEnabled=PartialFeatureName,
-] partial interface TestInterface {
+] partial interface TestInterfacePython {
     const unsigned short PARTIAL_UNSIGNED_SHORT = 0;
 
     attribute long partialLongAttribute;
     static attribute long partialStaticLongAttribute;
     [CallWith=ExecutionContext] attribute long partialCallWithExecutionContextLongAttribute;
 
     void partialVoidMethod();
     static void partialStaticVoidMethod();
     void partialVoidMethodLongArg(long longArg);
     [CallWith=ExecutionContext, RaisesException] void partialCallWithExecutionContextRaisesExceptionVoidMethod();
 
-    attribute PartialEnumType partialPartialEnumTypeAttribute;
-    void partialVoidMethodPartialCallbackTypeArg(PartialCallbackType partialCallbackTypeArg);
+    attribute PartialEnumType enumAttribute;
+    void methodThatTakesCallback(PartialCallbackType callback);
 };