Fixes the cache lock issue.

net/http/http_response_info.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_HTTP_HTTP_RESPONSE_INFO_H_
 #define NET_HTTP_HTTP_RESPONSE_INFO_H_
 
 #include <string>
 
 #include "base/time/time.h"
@@ skipping 59 matching lines @@
     ENTRY_USED,
     // The response was validated and served from the cache. Implies was_cached
     // && network_accessed.
     ENTRY_VALIDATED,
     // There was a stale entry in the cache that was updated. Implies
     // !was_cached && network_accessed.
     ENTRY_UPDATED,
     // The HTTP request didn't allow a conditional request. Implies !was_cached
     // && network_accessed.
     ENTRY_CANT_CONDITIONALIZE,
+    // Request joins the already created SharedWriters.
+    ENTRY_JOIN_SHARED_WRITING,
+    // Validation is not a match and SharedWriters exists, request dooms the
+    // shared writing entry and gets the response from the network.
+    ENTRY_DOOM_SHARED_WRITING,
     ENTRY_MAX,
   };
 
   HttpResponseInfo();
   HttpResponseInfo(const HttpResponseInfo& rhs);
   ~HttpResponseInfo();
   HttpResponseInfo& operator=(const HttpResponseInfo& rhs);
   // Even though we could get away with the copy ctor and default operator=,
   // that would prevent us from doing a bunch of forward declaration.
 
@@ skipping 103 matching lines @@
 
   // Any metadata asociated with this resource's cached data.
   scoped_refptr<IOBufferWithSize> metadata;
 
   static std::string ConnectionInfoToString(ConnectionInfo connection_info);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_RESPONSE_INFO_H_