Add JobController/Job count to UMA histograms when the count hits limit

net/http/http_stream_factory_impl.h

Index: net/http/http_stream_factory_impl.h
diff --git a/net/http/http_stream_factory_impl.h b/net/http/http_stream_factory_impl.h
index ce29d1f737245db52d205d9bb0f360e4afb51d14..0ced2809b53b7f0df68778646074dd7097b1d6e4 100644
--- a/net/http/http_stream_factory_impl.h
+++ b/net/http/http_stream_factory_impl.h
@@ -171,6 +171,11 @@ class NET_EXPORT_PRIVATE HttpStreamFactoryImpl : public HttpStreamFactory {
   // priorities.
   bool ProxyServerSupportsPriorities(const ProxyInfo& proxy_info) const;
 
+  // Add the count of JobControllers that are not completed to UMA histogram if
+  // the count hits the limit: 100, 200, 400, etc. Break down JobControllers

[xunjieli, 2017/04/10 23:49:14]

nit: if the count are multiples of 100.

[xunjieli, 2017/04/11 00:14:22]

hmm.. I don't see this one in the new patch. 

Could you also s/Add/Adds? 

[Zhongyi Shi, 2017/04/11 00:21:22]

Done. Whoops, I updated in histograms.xml and forgot here. Sorry about that. 

+  // count based on the type of JobController.
+  void AddJobControllerCountToHistograms() const;
+
   HttpNetworkSession* const session_;
 
   // All Requests/Preconnects are assigned with a JobController to manage