Fix file access on Chrome for ChromeOS on Linux

net/url_request/url_request_file_job.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 NET_URL_REQUEST_URL_REQUEST_FILE_JOB_H_
 #define NET_URL_REQUEST_URL_REQUEST_FILE_JOB_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 35 matching lines @@
   virtual void SetExtraRequestHeaders(
       const HttpRequestHeaders& headers) OVERRIDE;
 
  protected:
   virtual ~URLRequestFileJob();
 
   // The OS-specific full path name of the file
   FilePath file_path_;
 
  private:
+  // Tests to see if access to |path| is allowed. If g_allow_file_access_ is
+  // true, then this will return true. If the NetworkDelegate associated with
+  // the |request| says it's OK, then this will also return true.
+  static bool IsFileAccessAllowed(const URLRequest& request,
+                                  const FilePath& path);
+
   // Callback after fetching file info on a background thread.
   void DidResolve(bool exists, const base::PlatformFileInfo& file_info);
 
   // Callback after data is asynchronously read from the file.
   void DidRead(int result);
 
   FileStream stream_;
   bool is_directory_;
 
   HttpByteRange byte_range_;
   int64 remaining_bytes_;
 
   // The initial file metadata is fetched on a background thread.
   // AsyncResolver runs that task.
   class AsyncResolver;
   friend class AsyncResolver;
   scoped_refptr<AsyncResolver> async_resolver_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestFileJob);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_FILE_JOB_H_