Test network annotation tags added to unittests in net/.

net/log/net_log_util_unittest.cc

Index: net/log/net_log_util_unittest.cc
diff --git a/net/log/net_log_util_unittest.cc b/net/log/net_log_util_unittest.cc
index b885625a374efb0a44a04b87f3f0ffba1981304e..55d5ab28d4ae90c20936d401f352cf82961ba0d7 100644
--- a/net/log/net_log_util_unittest.cc
+++ b/net/log/net_log_util_unittest.cc
@@ -19,6 +19,7 @@
 #include "net/log/net_log_with_source.h"
 #include "net/log/test_net_log.h"
 #include "net/log/test_net_log_entry.h"
+#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -70,7 +71,8 @@ TEST(NetLogUtil, CreateNetLogEntriesForActiveObjectsOneContext) {
     std::vector<std::unique_ptr<URLRequest>> requests;
     for (size_t i = 0; i < num_requests; ++i) {
       requests.push_back(context.CreateRequest(GURL("about:life"),
-                                               DEFAULT_PRIORITY, &delegate));
+                                               DEFAULT_PRIORITY, &delegate,
+                                               TRAFFIC_ANNOTATION_FOR_TESTS));
     }
     std::set<URLRequestContext*> contexts;
     contexts.insert(&context);