Generalize the net module's LoadLog facility from a passive container, to an event stream (NetLog).

net/http/http_cache_transaction.h

 // Copyright (c) 2006-2009 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_
 
+#include "net/base/net_log.h"
 #include "net/http/http_cache.h"
 #include "net/http/http_response_info.h"
 #include "net/http/http_transaction.h"
 
 namespace net {
 
 class HttpResponseHeaders;
 class PartialData;
 
 // This is the transaction that is returned by the HttpCache transaction
 // factory.
 class HttpCache::Transaction : public HttpTransaction {
  public:
   Transaction(HttpCache* cache, bool enable_range_support);
   virtual ~Transaction();
 
   // HttpTransaction methods:
-  virtual int Start(const HttpRequestInfo*, CompletionCallback*, LoadLog*);
+  virtual int Start(const HttpRequestInfo*, CompletionCallback*,
+                    const BoundNetLog&);
   virtual int RestartIgnoringLastError(CompletionCallback* callback);
   virtual int RestartWithCertificate(X509Certificate* client_cert,
                                      CompletionCallback* callback);
   virtual int RestartWithAuth(const std::wstring& username,
                               const std::wstring& password,
                               CompletionCallback* callback);
   virtual bool IsReadyToRestartForAuth();
   virtual int Read(IOBuffer* buf, int buf_len, CompletionCallback* callback);
   virtual void StopCaching();
   virtual const HttpResponseInfo* GetResponseInfo() const;
@@ skipping 148 matching lines @@
   int DoCacheReadMetadata();
   int DoCacheReadMetadataComplete(int result);
   int DoCacheQueryData();
   int DoCacheQueryDataComplete(int result);
   int DoCacheReadData();
   int DoCacheReadDataComplete(int result);
   int DoCacheWriteData(int num_bytes);
   int DoCacheWriteDataComplete(int result);
 
   // Sets request_ and fields derived from it.
-  void SetRequest(LoadLog* load_log, const HttpRequestInfo* request);
+  void SetRequest(const BoundNetLog& net_log, const HttpRequestInfo* request);
 
   // Returns true if the request should be handled exclusively by the network
   // layer (skipping the cache entirely).
   bool ShouldPassThrough();
 
   // Associates this transaction with a cache entry.
   int AddToEntry();
 
   // Called to begin reading from the cache.  Returns network error code.
   int BeginCacheRead();
@@ skipping 84 matching lines @@
   int DoPartialCacheReadCompleted(int result);
 
   // Sends a histogram with info about the response headers.
   void HistogramHeaders(const HttpResponseHeaders* headers);
 
   // Called to signal completion of asynchronous IO.
   void OnIOComplete(int result);
 
   State next_state_;
   const HttpRequestInfo* request_;
-  scoped_refptr<LoadLog> load_log_;
+  BoundNetLog net_log_;
   scoped_ptr<HttpRequestInfo> custom_request_;
   // If extra_headers specified a "if-modified-since" or "if-none-match",
   // |external_validation_| contains the value of those headers.
   ValidationHeaders external_validation_;
   base::WeakPtr<HttpCache> cache_;
   HttpCache::ActiveEntry* entry_;
   HttpCache::ActiveEntry* new_entry_;
   scoped_ptr<HttpTransaction> network_trans_;
   CompletionCallback* callback_;  // Consumer's callback.
   HttpResponseInfo response_;
@@ skipping 16 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_