Add support for rect-based event targeting in views

ui/message_center/views/notification_view.cc

Index: ui/message_center/views/notification_view.cc
diff --git a/ui/message_center/views/notification_view.cc b/ui/message_center/views/notification_view.cc
index 11b3474f51ad2b3b3e7750cf708bd79a3301a0e6..606228739086b3397f8244d332860d521a08f189 100644
--- a/ui/message_center/views/notification_view.cc
+++ b/ui/message_center/views/notification_view.cc
@@ -693,8 +693,10 @@ void NotificationView::ScrollRectToVisible(const gfx::Rect& rect) {
   views::View::ScrollRectToVisible(GetLocalBounds());
 }
 
-views::View* NotificationView::GetEventHandlerForPoint(
-    const gfx::Point& point) {
+views::View* NotificationView::GetEventHandlerForRect(const gfx::Rect& rect) {
+  if (!views::View::UsePointBasedTargeting(rect))
+    return views::View::GetEventHandlerForRect(rect);
+
   // Want to return this for underlying views, otherwise GetCursor is not
   // called. But buttons are exceptions, they'll have their own event handlings.
   std::vector<views::View*> buttons(action_buttons_);
@@ -702,10 +704,10 @@ views::View* NotificationView::GetEventHandlerForPoint(
   buttons.push_back(expand_button());
 
   for (size_t i = 0; i < buttons.size(); ++i) {
-    gfx::Point point_in_child = point;
-    ConvertPointToTarget(this, buttons[i], &point_in_child);
-    if (buttons[i]->HitTestPoint(point_in_child))
-      return buttons[i]->GetEventHandlerForPoint(point_in_child);
+    gfx::Rect rect_in_child = rect;
+    ConvertRectToTarget(this, buttons[i], &rect_in_child);
+    if (buttons[i]->HitTestRect(rect_in_child))
+      return buttons[i]->GetEventHandlerForRect(rect_in_child);
   }
 
   return this;