Added coordinates information to InputLatency

ui/events/latency_info.h

Index: ui/events/latency_info.h
diff --git a/ui/events/latency_info.h b/ui/events/latency_info.h
index 92d928d615837d1323f07112b9244c135af4e67d..029600724927227289c04a1e51c57bae18476fb7 100644
--- a/ui/events/latency_info.h
+++ b/ui/events/latency_info.h
@@ -15,6 +15,8 @@
 
 namespace ui {
 
+const size_t kMaxLatencyCoordinates = 12;

[Sami, 2014/09/04 19:10:43]

Delete.

[cvicentiu, 2014/09/05 17:19:57]

Done.

+
 enum LatencyComponentType {
   // ---------------------------BEGIN COMPONENT-------------------------------
   // BEGIN COMPONENT is when we show the latency begin in chrome://tracing.
@@ -95,6 +97,8 @@ struct EVENTS_BASE_EXPORT LatencyInfo {
     uint32 event_count;
   };
 
+  typedef std::vector<std::pair<int32, int32> > LatencyScreenCoordinates;

[Sami, 2014/09/04 19:10:43]

float

InputCoordinates

gfx::PointF instead of pair.

[cvicentiu, 2014/09/05 17:19:56]

Done.

+
   // Empirically determined constant based on a typical scroll sequence.
   enum { kTypicalMaxComponentsPerLatencyInfo = 6 };
 
@@ -153,6 +157,9 @@ struct EVENTS_BASE_EXPORT LatencyInfo {
   void TraceEventType(const char* event_type);
 
   LatencyMap latency_components;
+
+  LatencyScreenCoordinates coordinates;

[Sami, 2014/09/04 19:10:43]

InputCoordinates input_coordinates, add a comment saying these are screen
coordinates.

[cvicentiu, 2014/09/05 17:19:56]

Done.

+
   // The unique id for matching the ASYNC_BEGIN/END trace event.
   int64 trace_id;
   // Whether a terminal component has been added.