Add temporary annotation tag to auditor.

A temporary network traffic annotation tag is added to be used during
refactoring of the socket classes. Network Traffic Annotation Auditor
is updated to add this tag to reserved words and ignore it in tests.

Bug: 690323
Change-Id: I79f570ced37a8572b6f495de478d18d998dc4189
Reviewed-on: https://chromium-review.googlesource.com/813674Reviewed-by: Martin Šrámek <msramek@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/master@{#522391}

tools/traffic_annotation/auditor/instance.cc

@@ -128,6 +128,13 @@ AuditorResult AnnotationInstance::Deserialize(
     return AuditorResult(AuditorResult::Type::ERROR_MISSING_TAG_USED, "",
                          file_path, line_number);
 
+  // TODO(crbug.com/656607): Remove this test.
+  // Process temporary tag.
+  if (unique_id_hash_code ==
+      NO_TRAFFIC_ANNOTATION_BUG_656607.unique_id_hash_code) {
+    return AuditorResult(AuditorResult::Type::RESULT_IGNORE);
+  }
+
   // Decode serialized proto.
   std::string annotation_text = "";
   while (start_line < end_line) {

tools/traffic_annotation/auditor/traffic_annotation_auditor.cc

@@ -37,7 +37,7 @@ std::map<int, std::string> kReservedAnnotations = {
     {PARTIAL_TRAFFIC_ANNOTATION_FOR_TESTS.unique_id_hash_code, "test_partial"},
     {NO_TRAFFIC_ANNOTATION_YET.unique_id_hash_code, "undefined"},
     {MISSING_TRAFFIC_ANNOTATION.unique_id_hash_code, "missing"},
-};
+    {NO_TRAFFIC_ANNOTATION_BUG_656607.unique_id_hash_code, "undefined-656607"}};
 
 struct AnnotationID {
   // Two ids can be the same in the following cases:

tools/traffic_annotation/auditor/traffic_annotation_auditor_unittest.cc

@@ -350,7 +350,8 @@ TEST_F(TrafficAnnotationAuditorTest, GetReservedUniqueIDs) {
       PARTIAL_TRAFFIC_ANNOTATION_FOR_TESTS.unique_id_hash_code,
       NO_TRAFFIC_ANNOTATION_YET.unique_id_hash_code,
       NO_PARTIAL_TRAFFIC_ANNOTATION_YET.unique_id_hash_code,
-      MISSING_TRAFFIC_ANNOTATION.unique_id_hash_code};
+      MISSING_TRAFFIC_ANNOTATION.unique_id_hash_code,
+      NO_TRAFFIC_ANNOTATION_BUG_656607.unique_id_hash_code};
 
   std::map<int, std::string> reserved_words =
       TrafficAnnotationAuditor::GetReservedUniqueIDs();