Extracting NetLog inner classes into their own classes.

net/log/net_log_entry.h

+// Copyright 2016 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_LOG_NET_LOG_ENTRY_H_
+#define NET_LOG_NET_LOG_ENTRY_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "base/time/time.h"
+#include "net/base/net_export.h"
+#include "net/log/net_log_capture_mode.h"
+#include "net/log/net_log_event_type.h"
+#include "net/log/net_log_parameters_callback.h"
+#include "net/log/net_log_source.h"
+
+namespace base {
+class Value;
+}
+
+namespace net {
+
+struct NET_EXPORT NetLogEntryData {
+  NetLogEntryData(NetLogEventType type,
+                  NetLogSource source,
+                  NetLogEventPhase phase,
+                  base::TimeTicks time,
+                  const NetLogParametersCallback* parameters_callback);
+  ~NetLogEntryData();
+
+  const NetLogEventType type;
+  const NetLogSource source;
+  const NetLogEventPhase phase;
+  const base::TimeTicks time;
+  const NetLogParametersCallback* const parameters_callback;
+};
+
+// A NetLogEntry pre-binds NetLogEntryData to a capture mode, so observers will
+// observe the output of ToValue() and ParametersToValue() at their log
+// capture mode rather than the current maximum.
+class NET_EXPORT NetLogEntry {
+ public:
+  NetLogEntry(const NetLogEntryData* data, NetLogCaptureMode capture_mode);
+  ~NetLogEntry();
+
+  NetLogEventType type() const { return data_->type; }
+  NetLogSource source() const { return data_->source; }
+  NetLogEventPhase phase() const { return data_->phase; }
+
+  // Serializes the specified event to a Value.  The Value also includes the
+  // current time.  Takes in a time to allow back-dating entries.
+  std::unique_ptr<base::Value> ToValue() const;
+
+  // Returns the parameters as a Value.  Returns nullptr if there are no
+  // parameters.
+  std::unique_ptr<base::Value> ParametersToValue() const;
+
+ private:
+  const NetLogEntryData* const data_;
+
+  // Log capture mode when the event occurred.
+  const NetLogCaptureMode capture_mode_;
+
+  // It is not safe to copy this class, since |parameters_callback_| may
+  // include pointers that become stale immediately after the event is added,
+  // even if the code were modified to keep its own copy of the callback.
+  DISALLOW_COPY_AND_ASSIGN(NetLogEntry);
+};
+
+}  // namespace net
+
+#endif  // NET_LOG_NET_LOG_ENTRY_H_