Add flag to beginRecording to request saveLayer information

cc/resources/picture.cc

Index: cc/resources/picture.cc
diff --git a/cc/resources/picture.cc b/cc/resources/picture.cc
index c35da96848e937b6b717874f7149d5ceba588a50..a8ac9c0505338140787766c2a3e3feea633a5c77 100644
--- a/cc/resources/picture.cc
+++ b/cc/resources/picture.cc
@@ -215,7 +215,8 @@ void Picture::Record(ContentLayerClient* painter,
 
   skia::RefPtr<SkCanvas> canvas;
   canvas = skia::SharePtr(recorder.beginRecording(
-      layer_rect_.width(), layer_rect_.height(), &factory));
+      layer_rect_.width(), layer_rect_.height(), &factory,
+      SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag));
 
   ContentLayerClient::GraphicsContextStatus graphics_context_status =
       ContentLayerClient::GRAPHICS_CONTEXT_ENABLED;