Adjust SDCH problem code histogram....

net/base/sdch_manager.h

 // Copyright (c) 2006-2008 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 89 matching lines @@
 
     // 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.
     DOMAIN_BLACKLIST_INCLUDES_TARGET = 61,
 
     // Problematic decode recovery methods.
     META_REFRESH_RECOVERY = 70,            // Dictionary not found.
-    META_REFRESH_UNSUPPORTED = 71,         // Unrecoverable error.
-    CACHED_META_REFRESH_UNSUPPORTED = 72,  // As above, but pulled from cache.
-    PASSING_THROUGH_NON_SDCH = 73,  // Non-html tagged as sdch but malformed.
+    // defunct =  71, // ALmost the same as META_REFRESH_UNSUPPORTED.
+    // defunct = 72,  // Almost the same as CACHED_META_REFRESH_UNSUPPORTED.
+    // defunct = 73,  // PASSING_THROUGH_NON_SDCH plus DISCARD_TENTATIVE_SDCH.
+    META_REFRESH_UNSUPPORTED = 74,         // Unrecoverable error.
+    CACHED_META_REFRESH_UNSUPPORTED = 75,  // As above, but pulled from cache.
+    PASSING_THROUGH_NON_SDCH = 76,  // Non-html tagged as sdch but malformed.
+
 
     // Common decoded recovery methods.
     META_REFRESH_CACHED_RECOVERY = 80,  // Probably startup tab loading.
     DISCARD_TENTATIVE_SDCH = 81,        // Server decided not to use sdch.
 
     MAX_PROBLEM_CODE  // Used to bound histogram.
   };
 
   // Use the following static limits to block DOS attacks until we implement
   // a cached dictionary evicition strategy.
@@ skipping 184 matching lines @@
   DomainCounter blacklisted_domains_;
 
   // Support exponential backoff in number of domain accesses before
   // blacklisting expires.
   DomainCounter exponential_blacklist_count;
 
   DISALLOW_COPY_AND_ASSIGN(SdchManager);
 };
 
 #endif  // NET_BASE_SDCH_MANAGER_H_