Chooser spinner should disappear as soon as one device shows up

chrome/browser/chooser_controller/chooser_controller.h

Index: chrome/browser/chooser_controller/chooser_controller.h
diff --git a/chrome/browser/chooser_controller/chooser_controller.h b/chrome/browser/chooser_controller/chooser_controller.h
index c5a3609b5377cd44fff62e24534b980e7b021967..bfbdc951a95cf01d805c5622ca9dc248da0be259 100644
--- a/chrome/browser/chooser_controller/chooser_controller.h
+++ b/chrome/browser/chooser_controller/chooser_controller.h
@@ -52,6 +52,10 @@ class ChooserController {
     // Called when refreshing options is in progress or complete.
     virtual void OnRefreshStateChanged(bool refreshing) = 0;
 
+    // Called when refreshing options is still in progress but found at least
+    // one option. Only need to be called when the first option is added.
+    virtual void OnOptionAvailableDuringRefresh() = 0;

[Reilly Grant (use Gerrit), 2016/07/28 22:03:04]

This method seems unnecessary. If OnOptionAdded() is called while the spinner is
being shown the UI can simply hide the spinner and show the table view again.

[juncai, 2016/07/29 00:45:21]

Good point! Removed this function.

Done.

+
    protected:
     virtual ~View() {}
   };