Improvements to uses of base::SmallMap

ui/latency/latency_info.h

Index: ui/latency/latency_info.h
diff --git a/ui/latency/latency_info.h b/ui/latency/latency_info.h
index 600f8745cd20e61cd800707c3a89d9a17b6e9e08..289fb5e3fcfcd0399a04789f4f647a74e22634cb 100644
--- a/ui/latency/latency_info.h
+++ b/ui/latency/latency_info.h
@@ -137,9 +137,10 @@ class LatencyInfo {
 
   // Map a Latency Component (with a component-specific int64_t id) to a
   // component info.
-  typedef base::SmallMap<
+  typedef base::small_map<

[danakj, 2017/04/18 21:35:50]

typedef->using?

This looks like a good contender for flat_map too.

       std::map<std::pair<LatencyComponentType, int64_t>, LatencyComponent>,
-      kTypicalMaxComponentsPerLatencyInfo> LatencyMap;
+      kTypicalMaxComponentsPerLatencyInfo>
+      LatencyMap;
 
   LatencyInfo();
   LatencyInfo(const LatencyInfo& other);