Handle URLRequest::Read() returning false without an error or ERR_IO_PENDING.

net/base/sdch_manager.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.
 
 // Provides global database of differential decompression dictionaries for the
 // SDCH filter (processes sdch enconded content).
 
 // Exactly one instance of SdchManager is built, and all references are made
 // into that collection.
 //
@@ skipping 106 matching lines @@
 
     // Dictionary loading problems.
     DICTIONARY_LOAD_ATTEMPT_FROM_DIFFERENT_HOST = 30,
     DICTIONARY_SELECTED_FOR_SSL = 31,
     DICTIONARY_ALREADY_LOADED = 32,
     DICTIONARY_SELECTED_FROM_NON_HTTP = 33,
     DICTIONARY_IS_TOO_LARGE= 34,
     DICTIONARY_COUNT_EXCEEDED = 35,
     DICTIONARY_ALREADY_SCHEDULED_TO_DOWNLOAD = 36,
     DICTIONARY_ALREADY_TRIED_TO_DOWNLOAD = 37,
+    DICTIONARY_FETCH_READ_FAILED = 38,
 
     // Failsafe hack.
     ATTEMPT_TO_DECODE_NON_HTTP_DATA = 40,
 
 
     // Content-Encoding problems detected, with no action taken.
     MULTIENCODING_FOR_NON_SDCH_REQUEST = 50,
     SDCH_CONTENT_ENCODE_FOR_NON_SDCH_REQUEST = 51,
 
     // Dictionary manager issues.
@@ skipping 261 matching lines @@
   ExperimentSet allow_latency_experiment_;
 
   int fetches_count_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(SdchManager);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_SDCH_MANAGER_H_