SetWindowLongPtrA takes a GWLP_WNDPROC

webkit/plugins/npapi/webplugin_delegate_impl_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/plugins/npapi/webplugin_delegate_impl.h"
 
 #include <map>
 #include <string>
 #include <vector>
 
@@ skipping 558 matching lines @@
             reinterpret_cast<HANDLE>(plugin_version_atom));
         DCHECK(result == TRUE) << "SetProp failed, last error = " <<
             GetLastError();
       }
     }
   }
 
   // Calling SetWindowLongPtrA here makes the window proc ASCII, which is
   // required by at least the Shockwave Director plug-in.
   SetWindowLongPtrA(
-      windowed_handle_, GWL_WNDPROC, reinterpret_cast<LONG>(DefWindowProcA));
+      windowed_handle_, GWLP_WNDPROC, reinterpret_cast<LONG>(DefWindowProcA));
 
   return true;
 }
 
 void WebPluginDelegateImpl::WindowedDestroyWindow() {
   if (windowed_handle_ != NULL) {
     // Unsubclass the window.
     WNDPROC current_wnd_proc = reinterpret_cast<WNDPROC>(
         GetWindowLongPtr(windowed_handle_, GWLP_WNDPROC));
     if (current_wnd_proc == NativeWndProc) {
@@ skipping 945 matching lines @@
       ::ReleaseCapture();
       break;
 
     default:
       break;
   }
 }
 
 }  // namespace npapi
 }  // namespace webkit