Simplify a method in UpgradeDetector.

chrome/browser/upgrade_detector.h

Index: chrome/browser/upgrade_detector.h
===================================================================
--- chrome/browser/upgrade_detector.h	(revision 284446)
+++ chrome/browser/upgrade_detector.h	(working copy)
@@ -33,12 +33,6 @@
     UPGRADE_ANNOYANCE_CRITICAL,  // Red exclamation mark.
   };
 
-  // The two types of icons we know about.
-  enum UpgradeNotificationIconType {
-    UPGRADE_ICON_TYPE_BADGE = 0,  // For overlay badging of the wrench menu.
-    UPGRADE_ICON_TYPE_MENU_ICON,  // For showing in the wrench menu.
-  };
-
   // Returns the singleton implementation instance.
   static UpgradeDetector* GetInstance();
 
@@ -78,10 +72,8 @@
 
   // Retrieves the right icon ID based on the degree of severity (see
   // UpgradeNotificationAnnoyanceLevel, each level has an an accompanying icon
-  // to go with it). |type| determines which class of icons the caller wants,
-  // either an icon appropriate for badging the wrench menu or one to display
-  // within the wrench menu.
-  int GetIconResourceID(UpgradeNotificationIconType type);
+  // to go with it) to display within the wrench menu.
+  int GetIconResourceID();
 
   UpgradeNotificationAnnoyanceLevel upgrade_notification_stage() const {
     return upgrade_notification_stage_;