[Autofill Assistant] Send missing flag to backend.

This will let the backend know whether the UI was shown to the user or
not.

Change-Id: I836fba76d322fc5989919323ccb4a50947a498e5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2056545
Commit-Queue: Clemens Arbesser <arbesser@google.com>
Commit-Queue: Sandro Maggi <sandromaggi@google.com>
Auto-Submit: Clemens Arbesser <arbesser@google.com>
Reviewed-by: Sandro Maggi <sandromaggi@google.com>
Cr-Commit-Position: refs/heads/master@{#741400}

components/autofill_assistant/browser/actions/collect_user_data_action.cc

@@ -718,6 +718,8 @@ void CollectUserDataAction::OnGetUserData(
           processed_action_proto_->mutable_collect_user_data_result()
               ->mutable_model());
     }
+    processed_action_proto_->mutable_collect_user_data_result()
+        ->set_shown_to_user(shown_to_user_);
   }
 
   EndAction(succeed ? ClientStatus(ACTION_APPLIED)

components/autofill_assistant/browser/actions/collect_user_data_action_unittest.cc

@@ -303,7 +303,10 @@ TEST_F(CollectUserDataActionTest, SelectLogin) {
                   Property(&ProcessedActionProto::status, ACTION_APPLIED),
                   Property(&ProcessedActionProto::collect_user_data_result,
                            Property(&CollectUserDataResultProto::login_payload,
-                                    "payload"))))));
+                                    "payload")),
+                  Property(&ProcessedActionProto::collect_user_data_result,
+                           Property(&CollectUserDataResultProto::shown_to_user,
+                                    true))))));
   CollectUserDataAction action(&mock_action_delegate_, action_proto);
   action.ProcessAction(callback_.Get());
 }
@@ -331,7 +334,10 @@ TEST_F(CollectUserDataActionTest, LoginChoiceAutomaticIfNoOtherOptions) {
                   Property(&ProcessedActionProto::status, ACTION_APPLIED),
                   Property(&ProcessedActionProto::collect_user_data_result,
                            Property(&CollectUserDataResultProto::login_payload,
-                                    "guest"))))));
+                                    "guest")),
+                  Property(&ProcessedActionProto::collect_user_data_result,
+                           Property(&CollectUserDataResultProto::shown_to_user,
+                                    false))))));
   CollectUserDataAction action(&mock_action_delegate_, action_proto);
   action.ProcessAction(callback_.Get());
 }

components/autofill_assistant/browser/service.proto

@@ -534,6 +534,9 @@ message CollectUserDataResultProto {
   optional int32 date_range_end_timeslot = 14;
   // The values obtained from the additional sections.
   repeated ModelProto.ModelValue additional_sections_values = 15;
+  // Indicates whether the UI was shown to the user. This can be false if
+  // only the login section was requested and the choice was implicitly made.
+  optional bool shown_to_user = 16;
 
   reserved 7, 8;
 }