Adds a couple more measures to the benchmarking app

apps/benchmark/measurements.h

Index: apps/benchmark/measurements.h
diff --git a/apps/benchmark/measurements.h b/apps/benchmark/measurements.h
index 3d17e71875f9e9c778951c654a7cacbfc641f33d..dbd3240872010cebe120cbfd9f4eb351c9bc8c85 100644
--- a/apps/benchmark/measurements.h
+++ b/apps/benchmark/measurements.h
@@ -25,7 +25,13 @@ struct EventSpec {
   ~EventSpec();
 };
 
-enum class MeasurementType { TIME_UNTIL, TIME_BETWEEN, AVG_DURATION };
+enum class MeasurementType {
+  TIME_UNTIL,
+  TIME_BETWEEN,
+  AVG_DURATION,
+  MEDIAN_DURATION,
+  DIST_DURATION,

[ppi, 2015/10/08 22:29:47]

I'd call this PERCENTILE_DURATION.

[zra, 2015/10/09 14:51:15]

Done.

+};
 

[ppi, 2015/10/08 22:29:47]

Please also update the documentation in
https://github.com/domokit/mojo/blob/master/apps/benchmark/README.md .

[zra, 2015/10/09 14:51:15]

Done.

 // Represents a single measurement to be performed on the collected trace.
 struct Measurement {
@@ -53,15 +59,19 @@ class Measurements {
 
   // Performs the given measurement. Returns the result in milliseconds or -1.0
   // if the measurement failed, e.g. because no events were matched.
-  double Measure(const Measurement& measurement);
+  void Measure(const Measurement& measurement,
+               std::vector<double>* results) const;
 
  private:
   bool EarliestOccurence(const EventSpec& event_spec,
-                         base::TimeTicks* earliest);
-  double TimeUntil(const EventSpec& event_spec);
+                         base::TimeTicks* earliest) const;
+  double TimeUntil(const EventSpec& event_spec) const;
   double TimeBetween(const EventSpec& first_event_spec,
-                     const EventSpec& second_event_spec);
-  double AvgDuration(const EventSpec& event_spec);
+                     const EventSpec& second_event_spec) const;
+  double AvgDuration(const EventSpec& event_spec) const;
+  bool Percentiles(const EventSpec& event_spec,
+                   const std::vector<double>& percentiles,
+                   std::vector<double>* result) const;
 
   std::vector<Event> events_;
   base::TimeTicks time_origin_;