Failure in reading Blob URL should results in network error

third_party/WebKit/Source/platform/loader/fetch/ResourceError.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2013 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 106 matching lines @@
   void SetWasIgnoredByHandler(bool ignored_by_handler) {
     was_ignored_by_handler_ = ignored_by_handler;
   }
   bool WasIgnoredByHandler() const { return was_ignored_by_handler_; }
 
   void SetIsCacheMiss(bool is_cache_miss) { is_cache_miss_ = is_cache_miss; }
   bool IsCacheMiss() const { return is_cache_miss_; }
   bool WasBlockedByResponse() const {
     return error_code_ == net::ERR_BLOCKED_BY_RESPONSE;
   }
+  bool IsFileNotFoundError() const {
+    return error_code_ == net::ERR_FILE_NOT_FOUND;
+  }
 
   void SetShouldCollapseInitiator(bool should_collapse_initiator) {
     should_collapse_initiator_ = should_collapse_initiator;
   }
   bool ShouldCollapseInitiator() const { return should_collapse_initiator_; }
 
   static bool Compare(const ResourceError&, const ResourceError&);
 
  private:
   String domain_;
@@ skipping 16 matching lines @@
 inline bool operator!=(const ResourceError& a, const ResourceError& b) {
   return !(a == b);
 }
 
 // Pretty printer for gtest. Declared here to avoid ODR violations.
 std::ostream& operator<<(std::ostream&, const ResourceError&);
 
 }  // namespace blink
 
 #endif  // ResourceError_h