Fix LatencyInfo compile error for ipc fuzzer

ui/events/latency_info.h

 // Copyright 2013 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 UI_EVENTS_LATENCY_INFO_H_
 #define UI_EVENTS_LATENCY_INFO_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 106 matching lines @@
 
   // Map a Latency Component (with a component-specific int64 id) to a
   // component info.
   typedef base::SmallMap<
       std::map<std::pair<LatencyComponentType, int64>, LatencyComponent>,
       kTypicalMaxComponentsPerLatencyInfo> LatencyMap;
 
   LatencyInfo();
   ~LatencyInfo();
 
+  // For test only.
+  LatencyInfo(int64 trace_id, bool terminated);
+
   // Returns true if the vector |latency_info| is valid. Returns false
   // if it is not valid and log the |referring_msg|.
   // This function is mainly used to check the latency_info vector that
   // is passed between processes using IPC message has reasonable size
   // so that we are confident the IPC message is not corrupted/compromised.
   // This check will go away once the IPC system has better built-in scheme
   // for corruption/compromise detection.
   static bool Verify(const std::vector<LatencyInfo>& latency_info,
                      const char* referring_msg);
 
@@ skipping 73 matching lines @@
   // Whether a terminal component has been added.
   bool terminated_;
 
   FRIEND_TEST_ALL_PREFIXES(LatencyInfoParamTraitsTest, Basic);
   friend struct IPC::ParamTraits<ui::LatencyInfo>;
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_LATENCY_INFO_H_