Add cpu count to trace metadata

base/test/trace_event_analyzer.h

 // Copyright (c) 2012 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.
 
 // Use trace_analyzer::Query and trace_analyzer::TraceAnalyzer to search for
 // specific trace events that were generated by the trace_event.h API.
 //
 // Basic procedure:
 // - Get trace events JSON string from base::debug::TraceLog.
 // - Create TraceAnalyzer with JSON string.
@@ skipping 545 matching lines @@
 // TraceAnalyzer helps tests search for trace events.
 class TraceAnalyzer {
  public:
   ~TraceAnalyzer();
 
   // Use trace events from JSON string generated by tracing API.
   // Returns non-NULL if the JSON is successfully parsed.
   static TraceAnalyzer* Create(const std::string& json_events)
                                WARN_UNUSED_RESULT;
 
+  void SetIgnoreMetadataEvents(bool ignore) { ignore_metadata_events_ = true; }
+
   // Associate BEGIN and END events with each other. This allows Query(OTHER_*)
   // to access the associated event and enables Query(EVENT_DURATION).
   // An end event will match the most recent begin event with the same name,
   // category, process ID and thread ID. This matches what is shown in
   // about:tracing. After association, the BEGIN event will point to the
   // matching END event, but the END event will not point to the BEGIN event.
   void AssociateBeginEndEvents();
 
   // Associate ASYNC_BEGIN, ASYNC_STEP and ASYNC_END events with each other.
   // An ASYNC_END event will match the most recent ASYNC_BEGIN or ASYNC_STEP
@@ skipping 47 matching lines @@
  private:
   TraceAnalyzer();
 
   bool SetEvents(const std::string& json_events) WARN_UNUSED_RESULT;
 
   // Read metadata (thread names, etc) from events.
   void ParseMetadata();
 
   std::map<TraceEvent::ProcessThreadID, std::string> thread_names_;
   std::vector<TraceEvent> raw_events_;
+  bool ignore_metadata_events_;
   bool allow_assocation_changes_;
 
   DISALLOW_COPY_AND_ASSIGN(TraceAnalyzer);
 };
 
 // Utility functions for TraceEventVector.
 
 struct RateStats {
   double min_us;
   double max_us;
@@ skipping 50 matching lines @@
 
 // Count all matches.
 static inline size_t CountMatches(const TraceEventVector& events,
                                   const Query& query) {
   return CountMatches(events, query, 0u, events.size());
 }
 
 }  // namespace trace_analyzer
 
 #endif  // BASE_TEST_TRACE_EVENT_ANALYZER_H_