NaCl: Supply Windows handle-passing function

ppapi/c/private/ppb_nacl_private.h

Index: ppapi/c/private/ppb_nacl_private.h
diff --git a/ppapi/c/private/ppb_nacl_private.h b/ppapi/c/private/ppb_nacl_private.h
index e275a909bdb3ac6bdaaae63ca805bd63bf505a58..939f37f4d45ac16e0ef31094214b0e319c3f4599 100644
--- a/ppapi/c/private/ppb_nacl_private.h
+++ b/ppapi/c/private/ppb_nacl_private.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -8,7 +8,7 @@
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 
-#define PPB_NACL_PRIVATE_INTERFACE "PPB_NaCl(Private);0.2"
+#define PPB_NACL_PRIVATE_INTERFACE "PPB_NaCl(Private);0.3"
 
 struct PPB_NaCl_Private {
   // This function launches NaCl's sel_ldr process.  On success, the function
@@ -33,6 +33,22 @@ struct PPB_NaCl_Private {
 
   // Enables the creation of sel_ldr processes from other than the main thread.
   void (*EnableBackgroundSelLdrLaunch)();
+
+  // This is Windows-specific.  This is a replacement for
+  // DuplicateHandle() for use inside the Windows sandbox.  Note that
+  // we provide this via dependency injection only to avoid the
+  // linkage problems that occur because the NaCl plugin is built as a
+  // separate DLL/DSO (see
+  // http://code.google.com/p/chromium/issues/detail?id=114439#c8).
+  // We use void* rather than the Windows HANDLE type to avoid an
+  // #ifdef here.  We use int rather than PP_Bool/bool so that this is
+  // usable with NaClSetBrokerDuplicateHandleFunc() without further
+  // wrapping.
+  int (*BrokerDuplicateHandle)(void* source_handle,
+                               uint32_t process_id,
+                               void** target_handle,
+                               uint32_t desired_access,
+                               uint32_t options);
 };
 
 #endif  // PPAPI_C_PRIVATE_PPB_NACL_PRIVATE_H_