[Web Payments] Refactor the row display code.

ui/views/view.h

Index: ui/views/view.h
diff --git a/ui/views/view.h b/ui/views/view.h
index 19118be10fb55da4c34777459a69a2aac8f7ce72..fcbee85c1bf2155eef7639c5b96e75c6980c1b4f 100644
--- a/ui/views/view.h
+++ b/ui/views/view.h
@@ -617,6 +617,12 @@ class VIEWS_EXPORT View : public ui::LayerDelegate,
   // be the target of an event.
   virtual bool CanProcessEventsWithinSubtree() const;
 
+  // Sets whether this view or any of its descendants are permitted to be the
+  // target of an event.
+  void set_can_process_events_within_subtree(bool can_process) {
+    can_process_events_within_subtree_ = can_process;
+  }
+
   // Returns true if the mouse cursor is over |view| and mouse events are
   // enabled.
   bool IsMouseHovered() const;
@@ -1491,6 +1497,8 @@ class VIEWS_EXPORT View : public ui::LayerDelegate,
   mutable bool iterating_;
 #endif
 
+  bool can_process_events_within_subtree_;
+
   // Size and disposition ------------------------------------------------------
 
   // This View's bounds in the parent coordinate system.