Fix system notifications incorrectly marked as type WEB_PAGE

ui/message_center/message_center_style.cc

Index: ui/message_center/message_center_style.cc
diff --git a/ui/message_center/message_center_style.cc b/ui/message_center/message_center_style.cc
index 33f875796c5f0c75485cb681f525d03a7b8fb115..3c98bd4ad404c73f38941727436a4ff2764da696 100644
--- a/ui/message_center/message_center_style.cc
+++ b/ui/message_center/message_center_style.cc
@@ -55,9 +55,9 @@ const size_t kNotificationMaximumItems = 5;
 const int kAutocloseDefaultDelaySeconds = 8;
 const int kAutocloseHighPriorityDelaySeconds = 25;
 // Web notifications use a larger timeout for now, which improves re-engagement.
-// TODO(johnme): Use Finch to experiment with different values for this, then
-// consider replacing kAutocloseDefaultDelaySeconds with this.
-const int kAutocloseWebNotificationDelaySeconds = 20;
+// TODO(johnme): Use Finch to experiment with different values, then consider
+// replacing kAutocloseDefaultDelaySeconds with this (https://crbug.com/530697).
+const int kAutocloseWebPageDelaySeconds = 20;
 
 // Colors.
 const SkColor kBackgroundLightColor = SkColorSetRGB(0xf1, 0xf1, 0xf1);