Shape Detection: add SaveSameObject idl to SameObject annotations

third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl

Index: third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl
diff --git a/third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl b/third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl
index bccaab02d6daa4310a2a5405023e5a19b0c97ff0..fe1714ecf7978fe40621e744dfd5fb653b31a8fa 100644
--- a/third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl
+++ b/third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl
@@ -9,7 +9,6 @@
     RuntimeEnabled=ShapeDetection,
 ] interface DetectedFace {
     // TODO(xianglu): Implement any other fields. https://crbug.com/646083
-    readonly attribute DOMRect boundingBox;
-
-    [SameObject] readonly attribute FrozenArray<Landmark> landmarks;
+    [SameObject, SaveSameObject] readonly attribute DOMRect boundingBox;

[Yuki, 2017/05/10 06:37:37]

Ditto.  We shouldn't need [SaveSameObject] here, but please test it.

+    [SameObject, SaveSameObject] readonly attribute FrozenArray<Landmark> landmarks;
 };