Let LatencyInfo async events be under category "latency_info"

ui/events/latency_info.cc

 // 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.
 
 #include "ui/events/latency_info.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/json/json_writer.h"
@@ skipping 278 matching lines @@
       }
 
       if (trace_name_str) {
         if (IsInputLatencyBeginComponent(component))
           trace_name = std::string("InputLatency::") + trace_name_str;
         else
           trace_name = std::string("Latency::") + trace_name_str;
       }
 
       TRACE_EVENT_COPY_ASYNC_BEGIN_WITH_TIMESTAMP0(
-          "benchmark",
+          "benchmark,latencyInfo",
           trace_name.c_str(),
           TRACE_ID_DONT_MANGLE(trace_id),
           ts);
     }
 
     TRACE_EVENT_FLOW_BEGIN1(
         "input,benchmark", "LatencyInfo.Flow", TRACE_ID_DONT_MANGLE(trace_id),
         "trace_id", trace_id);
   }
 
@@ skipping 15 matching lines @@
       it->second.event_count = new_count;
     }
   }
 
   if (IsTerminalComponent(component) && trace_id != -1) {
     // Should only ever add terminal component once.
     CHECK(!terminated);
     terminated = true;
 
     if (*benchmark_enabled) {
-      TRACE_EVENT_COPY_ASYNC_END1("benchmark",
+      TRACE_EVENT_COPY_ASYNC_END1("benchmark,latencyInfo",
                                   trace_name.c_str(),
                                   TRACE_ID_DONT_MANGLE(trace_id),
                                   "data", AsTraceableData(*this));
     }
 
     TRACE_EVENT_FLOW_END0(
         "input,benchmark", "LatencyInfo.Flow", TRACE_ID_DONT_MANGLE(trace_id));
   }
 }
 
@@ skipping 20 matching lines @@
       it++;
     }
   }
 }
 
 void LatencyInfo::Clear() {
   latency_components.clear();
 }
 
 }  // namespace ui