network_time_tracker: add temporary time protocol.

components/network_time/BUILD.gn

Index: components/network_time/BUILD.gn
diff --git a/components/network_time/BUILD.gn b/components/network_time/BUILD.gn
index 15d67a5fa9bf7d1c1e9b6ccce3487ef6d4b86f94..57d6e2aafe54b0a67dbf3031650b31b49012e949 100644
--- a/components/network_time/BUILD.gn
+++ b/components/network_time/BUILD.gn
@@ -13,7 +13,9 @@ static_library("network_time") {
   deps = [
     "//base",
     "//base:i18n",
+    "//components/client_update_protocol",
     "//components/prefs",
+    "//net",
   ]
 }
 
@@ -28,6 +30,8 @@ source_set("unit_tests") {
     "//base",
     "//base/test:test_support",
     "//components/prefs:test_support",
+    "//net",
+    "//net:test_support",
     "//testing/gtest",
   ]
 }