Remove ENABLE_CUSTOM_ELEMENTS compile time flag

Source/bindings/v8/V8AdaptorFunction.h

 /*
  * Copyright (C) 2012 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 18 matching lines @@
  */
 
 #ifndef V8AdaptorFunction_h
 #define V8AdaptorFunction_h
 
 #include "bindings/v8/V8Binding.h"
 #include "bindings/v8/V8HiddenPropertyName.h"
 #include "bindings/v8/WrapperTypeInfo.h"
 #include "wtf/PassRefPtr.h"
 
-#if ENABLE(CUSTOM_ELEMENTS)
-
 namespace WebCore {
 
 //
 // FIXME(https://bugs.webkit.org/show_bug.cgi?id=108138):
 // V8AdaptorFunction class and V8WrapAsFunction IDL attribute are needed for two reasons:
 // - 1) V8 doesn't allow expanding the internal field of function objects. https://code.google.com/p/v8/issues/detail?id=837
 //      WebKit need it to associate each wrapper to its backing C++ object. We store it in a hidden property of the wrapped object.
 // - 2) Binding codebase assumes every wrapper object is created through ObjectTemplate::NewInstance(), not FunctionTemplate::GetFunction().
 // Once 1) is addresssed, we could attack 2) with it. 
 //
@@ skipping 20 matching lines @@
 inline v8::Handle<v8::Function> V8AdaptorFunction::get(v8::Handle<v8::Object> object)
 {
     v8::Handle<v8::Value> adaptorFunction = object->GetHiddenValue(V8HiddenPropertyName::adaptorFunctionPeer());
     ASSERT(!adaptorFunction.IsEmpty());
     ASSERT(adaptorFunction->IsFunction());
     return v8::Handle<v8::Function>::Cast(adaptorFunction);
 }
 
 } // namespace WebCore
 
-#endif // ENABLE(CUSTOM_ELEMENTS)
 #endif // V8AdaptorFunction_h