[NaCl SDK] Make the SDK examples buildable as a packaged app.

native_client_sdk/src/libraries/ppapi_main/ppapi_main.h

 // 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.
 
 #ifndef PPAPI_MAIN_PPAPI_MAIN_H_
 #define PPAPI_MAIN_PPAPI_MAIN_H_
 
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_module.h"
 #include "ppapi_main/ppapi_event.h"
@@ skipping 23 matching lines @@
 void PPAPI_ReleaseEvent(PPAPIEvent* event);
 
 
 // Functions for 3D instances
 int32_t *PPAPIGet3DAttribs(uint32_t width, uint32_t height);
 void PPAPIBuildContext(uint32_t width, uint32_t height);
 void PPAPIRender(uint32_t width, uint32_t height);
 
 EXTERN_C_END
 
-#define PPAPI_MAIN_DEFAULT_ARGS       \
-  {                                   \
-    NULL, NULL                        \
-  }
+#define PPAPI_MAIN_DEFAULT_ARGS  NULL, NULL
 
-
-#define PPAPI_MAIN_USE(factory, args)                         \
+#define PPAPI_MAIN_USE(factory, ...)                          \
 void* UserCreateInstance(PP_Instance inst) {                  \
-  static const char *params[] = args;                         \
+  static const char *params[] = { __VA_ARGS__ };  \
   return factory(inst, params);                               \
 }
 
 #define PPAPI_MAIN_WITH_DEFAULT_ARGS \
   PPAPI_MAIN_USE(PPAPI_CreateInstance, PPAPI_MAIN_DEFAULT_ARGS)
 
 #define PPAPI_MAIN_3D_WITH_DEFAULT_ARGS \
   PPAPI_MAIN_USE(PPAPI_CreateInstance3D, PPAPI_MAIN_DEFAULT_ARGS)
 
-#define PPAPI_MAIN_WITH_ARGS(args) \
-  PPAPI_MAIN_USE(PPAPI_CreateInstance, args)
+#define PPAPI_MAIN_WITH_ARGS(...) \
+  PPAPI_MAIN_USE(PPAPI_CreateInstance, __VA_ARGS__)
 
 
 #endif  // PPAPI_MAIN_PPAPI_MAIN_H_