DevTools & WebTiming : Migrate from PassiveLogCollector to dedicated LoadTimingObserver.

chrome/browser/net/load_timing_observer.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.
+
+#ifndef CHROME_BROWSER_NET_LOAD_TIMING_OBSERVER_H_
+#define CHROME_BROWSER_NET_LOAD_TIMING_OBSERVER_H_
+
+#include "base/hash_tables.h"
+#include "base/time.h"
+#include "chrome/browser/net/chrome_net_log.h"
+#include "net/base/net_log.h"
+#include "webkit/glue/resource_loader_bridge.h"
+
+// LoadTimingObserver watches the NetLog event stream and collects the network
+// timing information.
+class LoadTimingObserver : public ChromeNetLog::Observer {
+ public:
+  struct URLRequestRecord {
+    URLRequestRecord();
+
+    webkit_glue::ResourceLoaderBridge::LoadTimingInfo timing;
+    uint32 connect_job_id;
+    uint32 socket_log_id;
+    bool socket_reused;
+    base::TimeTicks base_ticks;
+  };
+
+  struct ConnectJobRecord {
+    base::TimeTicks dns_start;
+    base::TimeTicks dns_end;
+  };
+
+  LoadTimingObserver();
+  ~LoadTimingObserver();
+
+  URLRequestRecord* GetURLRequestRecord(uint32 source_id);
+
+  // Observer implementation:
+  virtual void OnAddEntry(net::NetLog::EventType type,
+                          const base::TimeTicks& time,
+                          const net::NetLog::Source& source,
+                          net::NetLog::EventPhase phase,
+                          net::NetLog::EventParameters* params);
+ private:
+  void OnAddURLRequestEntry(net::NetLog::EventType type,
+                            const base::TimeTicks& time,
+                            const net::NetLog::Source& source,
+                            net::NetLog::EventPhase phase,
+                            net::NetLog::EventParameters* params);
+
+  void OnAddConnectJobEntry(net::NetLog::EventType type,
+                            const base::TimeTicks& time,
+                            const net::NetLog::Source& source,
+                            net::NetLog::EventPhase phase,
+                            net::NetLog::EventParameters* params);
+
+  URLRequestRecord* CreateURLRequestRecord(uint32 source_id);
+  void DeleteURLRequestRecord(uint32 source_id);
+
+  typedef base::hash_map<uint32, URLRequestRecord> URLRequestToRecordMap;
+  typedef base::hash_map<uint32, ConnectJobRecord> ConnectJobToRecordMap;
+  URLRequestToRecordMap url_request_to_record_;
+  ConnectJobToRecordMap connect_job_to_record_;
+
+  DISALLOW_COPY_AND_ASSIGN(LoadTimingObserver);
+};
+
+#endif  // CHROME_BROWSER_NET_LOAD_TIMING_OBSERVER_H_