Switch to standard integer types in ppapi/.

ppapi/cpp/core.h

 // Copyright (c) 2011 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_CPP_CORE_H_
 #define PPAPI_CPP_CORE_H_
 
+#include <stdint.h>
+
 #include "ppapi/c/ppb_core.h"
 
 /// @file
 /// This file defines APIs related to memory management, time, and threads.
 
 namespace pp {
 
 class CompletionCallback;
 class Module;
 
@@ skipping 92 matching lines @@
   // Copy and assignment are disallowed.
   Core(const Core& other);
   Core& operator=(const Core& other);
 
   const PPB_Core* interface_;
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_CORE_H_