Update drag edge indicator view per request by UX team

ash/display/shared_display_edge_indicator.h

Index: ash/display/shared_display_edge_indicator.h
diff --git a/ash/display/shared_display_edge_indicator.h b/ash/display/shared_display_edge_indicator.h
index 1913e8a13df46fb6e87f26528072ae39e8883bab..762d067b458759c5a62f4b59fdc0f6cf511ebb9a 100644
--- a/ash/display/shared_display_edge_indicator.h
+++ b/ash/display/shared_display_edge_indicator.h
@@ -20,6 +20,7 @@ class ThrobAnimation;
 }
 
 namespace views {
+class View;
 class Widget;
 }
 
@@ -46,8 +47,8 @@ class ASH_EXPORT SharedDisplayEdgeIndicator : public ui::AnimationDelegate {
   // Used to show the displays' shared edge where a window can be moved across.
   // |src_widget_| is for the display where drag starts and |dst_widget_| is
   // for the other display.
-  views::Widget* src_widget_;
-  views::Widget* dst_widget_;
+  views::View* src_indicator_;
+  views::View* dst_indicator_;
 
   // Used to transition the opacity.
   scoped_ptr<ui::ThrobAnimation> animation_;