This CL is a follow up to https://codereview.chromium.org/416683002/.

net/test/spawned_test_server/base_test_server.h

Index: net/test/spawned_test_server/base_test_server.h
diff --git a/net/test/spawned_test_server/base_test_server.h b/net/test/spawned_test_server/base_test_server.h
index fb71222499c9761b060a9abd5b53400cf15a44ab..45ea1cecffa4a12919aed104a2b5e9614f1fd147 100644
--- a/net/test/spawned_test_server/base_test_server.h
+++ b/net/test/spawned_test_server/base_test_server.h
@@ -205,7 +205,8 @@ class BaseTestServer {
     bool enable_npn;
 
     // Whether to disable TLS session caching. When session caching is
-    // disabled, the server will generate a new Session ID for every connection.
+    // disabled, the server will use an empty session ID in the
+    // ServerHello.
     bool disable_session_cache;
   };