Show avatar icon on V2 app's frame

ash/frame/custom_frame_view_ash.h

Index: ash/frame/custom_frame_view_ash.h
diff --git a/ash/frame/custom_frame_view_ash.h b/ash/frame/custom_frame_view_ash.h
index 6fd9bdf82aef241fe0840ae1c66e328bf43e320d..bfa6729e7b5dd190b23a80164eebfe634e4c56b3 100644
--- a/ash/frame/custom_frame_view_ash.h
+++ b/ash/frame/custom_frame_view_ash.h
@@ -58,10 +58,14 @@ class ASH_EXPORT CustomFrameViewAsh : public views::NonClientFrameView {
   virtual gfx::Size GetMaximumSize() OVERRIDE;
   virtual void SchedulePaintInRect(const gfx::Rect& r) OVERRIDE;
   virtual bool HitTestRect(const gfx::Rect& rect) const OVERRIDE;
+  virtual void VisibilityChanged(views::View* starting_from,
+                                 bool is_visible) OVERRIDE;
 
   // Get the view of the header.
   views::View* GetHeaderView();
 
+  const views::View* GetAvatarIconViewForTest() const;
+
  private:
   class OverlayView;
   friend class TestWidgetConstraintsDelegate;