Add request_id to HttpRequestInfo and pass it to the NetworkDelegate for events.

net/http/http_cache_transaction.h

 // Copyright (c) 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.
 
 // This file declares HttpCache::Transaction, a private class of HttpCache so
 // it should only be included by http_cache.cc
 
 #ifndef NET_HTTP_HTTP_CACHE_TRANSACTION_H_
 #define NET_HTTP_HTTP_CACHE_TRANSACTION_H_
 #pragma once
@@ skipping 135 matching lines @@
     STATE_UPDATE_CACHED_RESPONSE,
     STATE_UPDATE_CACHED_RESPONSE_COMPLETE,
     STATE_OVERWRITE_CACHED_RESPONSE,
     STATE_TRUNCATE_CACHED_DATA,
     STATE_TRUNCATE_CACHED_DATA_COMPLETE,
     STATE_TRUNCATE_CACHED_METADATA,
     STATE_TRUNCATE_CACHED_METADATA_COMPLETE,
     STATE_PARTIAL_HEADERS_RECEIVED,
     STATE_CACHE_READ_RESPONSE,
     STATE_CACHE_READ_RESPONSE_COMPLETE,
+    STATE_CACHE_NOTIFY_BEFORE_SEND_HEADERS,

[rvargas (doing something else), 2011/03/23 00:54:35]

Given that these states are not related to the disk cache, they should not have
the _CACHE_ part, and should probably be placed right after
STATE_ADD_TO_ENTRY_COMPLETE

[Matt Perry, 2011/03/24 00:11:25]

Do you mean that they should be called in that order as well, or just appear
there in this list? I've assumed the latter.

[rvargas (doing something else), 2011/03/24 18:16:02]

yes, the latter.

+    STATE_CACHE_NOTIFY_BEFORE_SEND_HEADERS_COMPLETE,
     STATE_CACHE_WRITE_RESPONSE,
     STATE_CACHE_WRITE_TRUNCATED_RESPONSE,
     STATE_CACHE_WRITE_RESPONSE_COMPLETE,
     STATE_CACHE_READ_METADATA,
     STATE_CACHE_READ_METADATA_COMPLETE,
     STATE_CACHE_QUERY_DATA,
     STATE_CACHE_QUERY_DATA_COMPLETE,
     STATE_CACHE_READ_DATA,
     STATE_CACHE_READ_DATA_COMPLETE,
     STATE_CACHE_WRITE_DATA,
@@ skipping 34 matching lines @@
   int DoUpdateCachedResponse();
   int DoUpdateCachedResponseComplete(int result);
   int DoOverwriteCachedResponse();
   int DoTruncateCachedData();
   int DoTruncateCachedDataComplete(int result);
   int DoTruncateCachedMetadata();
   int DoTruncateCachedMetadataComplete(int result);
   int DoPartialHeadersReceived();
   int DoCacheReadResponse();
   int DoCacheReadResponseComplete(int result);
+  int DoCacheNotifyBeforeSendHeaders(int result);
+  int DoCacheNotifyBeforeSendHeadersComplete(int result);
   int DoCacheWriteResponse();
   int DoCacheWriteTruncatedResponse();
   int DoCacheWriteResponseComplete(int result);
   int DoCacheReadMetadata();
   int DoCacheReadMetadataComplete(int result);
   int DoCacheQueryData();
   int DoCacheQueryDataComplete(int result);
   int DoCacheReadData();
   int DoCacheReadDataComplete(int result);
   int DoCacheWriteData(int num_bytes);
@@ skipping 131 matching lines @@
   uint64 final_upload_progress_;
   CompletionCallbackImpl<Transaction> io_callback_;
   scoped_refptr<CancelableCompletionCallback<Transaction> > cache_callback_;
   scoped_refptr<CancelableCompletionCallback<Transaction> >
       write_headers_callback_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_CACHE_TRANSACTION_H_