Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/src/shared/ppapi_proxy/utility.h

Index: ppapi/native_client/src/shared/ppapi_proxy/utility.h
===================================================================
--- ppapi/native_client/src/shared/ppapi_proxy/utility.h	(revision 0)
+++ ppapi/native_client/src/shared/ppapi_proxy/utility.h	(revision 0)
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2011 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_SRC_SHARED_PPAPI_PROXY_UTILITY_H_
+#define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_UTILITY_H_
+
+#include "native_client/src/include/nacl_assert.h"
+#include "native_client/src/shared/platform/nacl_check.h"
+
+namespace ppapi_proxy {
+
+void DebugPrintf(const char* format, ...);
+
+// Check to see if |data| points to a valid UTF8 string.  Checks at most |len|
+// characters. See http://tools.ietf.org/html/rfc3629 for details.
+bool StringIsUtf8(const char* data, uint32_t len);
+
+}  // namespace ppapi_proxy
+
+#endif  // NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_UTILITY_H_