Switch to standard integer types in ppapi/.

ppapi/cpp/network_proxy.h

 // Copyright 2013 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_NETWORK_PROXY_H_
 #define PPAPI_CPP_NETWORK_PROXY_H_
 
+#include <stdint.h>
+
 #include <string>
 
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/cpp/instance_handle.h"
 
 namespace pp {
 
 /// This class provides a way to determine the appropriate proxy settings for
 /// for a given URL.
 ///
@@ skipping 22 matching lines @@
   /// @return An int32_t containing an error code from <code>pp_errors.h</code>.
   static int32_t GetProxyForURL(
       const InstanceHandle& instance,
       const Var& url,
       const pp::CompletionCallbackWithOutput<Var>& callback);
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_NETWORK_PROXY_H_