ppapi_proxy: Make DebugPrintf more usable....

tests/fake_browser_ppapi/utility.h

Index: tests/fake_browser_ppapi/utility.h
===================================================================
--- tests/fake_browser_ppapi/utility.h	(revision 0)
+++ tests/fake_browser_ppapi/utility.h	(revision 0)
@@ -0,0 +1,16 @@
+// Copyright 2010 The Native Client 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 NATIVE_CLIENT_TESTS_FAKE_BROWSER_PPAPI_UTILITY_H_
+#define NATIVE_CLIENT_TESTS_FAKE_BROWSER_PPAPI_UTILITY_H_
+
+#include "native_client/src/shared/platform/nacl_check.h"
+
+namespace fake_browser_ppapi {
+
+void DebugPrintf(const char* format, ...);
+
+}  // namespace fake_browser_ppapi
+
+#endif  // NATIVE_CLIENT_TESTS_FAKE_BROWSER_PPAPI_UTILITY_H_