Add net-log entries when HttpStream jobs are forced to wait, and when they're delayed and resumed.

net/log/net_log_event_type_list.h

Index: net/log/net_log_event_type_list.h
diff --git a/net/log/net_log_event_type_list.h b/net/log/net_log_event_type_list.h
index 893f16e08b8bc666e0a351b31a546b90b16bbde8..4730e14b9cf52b9f56c10e587916281c0136f485 100644
--- a/net/log/net_log_event_type_list.h
+++ b/net/log/net_log_event_type_list.h
@@ -1055,6 +1055,10 @@ EVENT_TYPE(HTTP_STREAM_REQUEST)
 //   }
 EVENT_TYPE(HTTP_STREAM_JOB)
 
+// Measures the time and HttpStreamFactoryImpl::Job spends waiting for
+// another job.

[eroman, 2017/02/14 21:18:36]

Please mention the parameter "should_wait"

[Ryan Hamilton, 2017/02/14 21:42:37]

Done. (Dangit! Initially this didn't have any params but then I added one and
didn't update the comment.) Thanks!

+EVENT_TYPE(HTTP_STREAM_JOB_WAITING)
+
 // Identifies the NetLogSource() for a Job started by the Request.
 // The event parameters are:
 //   {
@@ -1095,12 +1099,18 @@ EVENT_TYPE(HTTP_STREAM_REQUEST_PROTO)
 // Job. The orphaned Job will continue to run to completion.
 EVENT_TYPE(HTTP_STREAM_JOB_ORPHANED)
 
-// Emitted when a job is asked to resume after non-zero microseconds.
+// Emitted when a job is delayed.
 //   {
-//     "resume_after_ms": <Number of milliseconds until job will be unblocked>
+//     "delay_ms": <Number of milliseconds until job will be resumed>
 //   }
 EVENT_TYPE(HTTP_STREAM_JOB_DELAYED)
 
+// Emitted when a job is asked to resume after non-zero microseconds.
+//   {
+//     "delay_ms": <Number of milliseconds the job was delayed before resuming>
+//   }
+EVENT_TYPE(HTTP_STREAM_JOB_RESUMED)
+
 // Marks the start/end of a HttpStreamFactoryImpl::JobController.
 // The following parameters are attached:
 //   {