Set file tokens for NaCl main nexe if available to enable validation caching.

components/nacl/renderer/ppb_nacl_private_impl.cc

 // 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.
 
 #include "components/nacl/renderer/ppb_nacl_private_impl.h"
 
 #include <numeric>
 #include <string>
 #include <vector>
 
@@ skipping 1308 matching lines @@
 
 void DownloadNexeCompletion(const DownloadNexeRequest& request,
                             base::PlatformFile target_file,
                             PP_FileHandle* out_handle,
                             FileDownloader::Status status,
                             int http_status);
 
 void DownloadNexe(PP_Instance instance,
                   const char* url,
                   PP_FileHandle* out_handle,
+                  uint64_t* file_token_lo,
+                  uint64_t* file_token_hi,
                   PP_CompletionCallback callback) {
   CHECK(url);
   CHECK(out_handle);
   DownloadNexeRequest request;
   request.instance = instance;
   request.url = url;
   request.callback = callback;
   request.start_time = base::Time::Now();
 
   // Try the fast path for retrieving the file first.
-  uint64_t file_token_lo = 0;
-  uint64_t file_token_hi = 0;
   PP_FileHandle file_handle = OpenNaClExecutable(instance,
                                                  url,
-                                                 &file_token_lo,
-                                                 &file_token_hi);
+                                                 file_token_lo,
+                                                 file_token_hi);
   if (file_handle != PP_kInvalidFileHandle) {
     DownloadNexeCompletion(request,
                            file_handle,
                            out_handle,
                            FileDownloader::SUCCESS,
                            200);
     return;
   }
 
   // The fast path didn't work, we'll fetch the file using URLLoader and write
@@ skipping 122 matching lines @@
   &DownloadNexe
 };
 
 }  // namespace
 
 const PPB_NaCl_Private* GetNaClPrivateInterface() {
   return &nacl_interface;
 }
 
 }  // namespace nacl