Shape detection service: Add QR detection in Mac

content/test/data/media/face_detection_test.html

Index: content/test/data/media/face_detection_test.html
diff --git a/content/test/data/media/face_detection_test.html b/content/test/data/media/face_detection_test.html
index 098ef4f79a65f835ad99ab36a5173fa30efc16b1..16b5dd73cb5c4ecbf979cab6dfec5d6460afb773 100644
--- a/content/test/data/media/face_detection_test.html
+++ b/content/test/data/media/face_detection_test.html
@@ -26,8 +26,8 @@
           window.domAutomationController.send(results);
         })
         .catch(error => {
-          error = new Error("Error during detection:" + error);
-          window.domAutomationController.send(error.stack);
+          error = new Error("Error during detection:" + error.message);
+          window.domAutomationController.send(error.message);
         });
     }
   }