Update about:cache to display cached metadata for an entry....

net/http/http_cache_transaction.cc

 // Copyright (c) 2006-2010 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.
 
 #include "net/http/http_cache_transaction.h"
 
 #include "base/compiler_specific.h"
 
 #if defined(OS_POSIX)
 #include <unistd.h>
@@ skipping 12 matching lines @@
 #include "net/http/http_request_info.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_transaction.h"
 #include "net/http/http_util.h"
 #include "net/http/partial_data.h"
 
 using base::Time;
 
 namespace net {
 
-// disk cache entry data indices.
-enum {
-  kResponseInfoIndex,
-  kResponseContentIndex,
-  kMetadataIndex
-};
-
-//-----------------------------------------------------------------------------
-
 struct HeaderNameAndValue {
   const char* name;
   const char* value;
 };
 
 // If the request includes one of these request headers, then avoid caching
 // to avoid getting confused.
 static const HeaderNameAndValue kPassThroughHeaders[] = {
   { "if-unmodified-since", NULL },  // causes unexpected 412s
   { "if-match", NULL },             // causes unexpected 412s
@@ skipping 1764 matching lines @@
   // |value| goes from 0 to 63. Actually, the max value should be 47 (0x2f)
   // but we'll see.
   UMA_HISTOGRAM_ENUMERATION("HttpCache.ResponseHeaders", value, 65);
 }
 
 void HttpCache::Transaction::OnIOComplete(int result) {
   DoLoop(result);
 }
 
 }  // namespace net