Treat touch icons just like non-touch icons on mobile

components/favicon/core/favicon_driver_observer.h

Index: components/favicon/core/favicon_driver_observer.h
diff --git a/components/favicon/core/favicon_driver_observer.h b/components/favicon/core/favicon_driver_observer.h
index ce80877a7376948431f15b4c0741274cb746c15d..13d6840f294e9105296a56291170529ab99e6393 100644
--- a/components/favicon/core/favicon_driver_observer.h
+++ b/components/favicon/core/favicon_driver_observer.h
@@ -27,12 +27,9 @@ class FaviconDriverObserver {
     // favicon of type favicon_base::FAVICON. If the page does not provide a
     // 16x16 DIP icon, the icon is generated by resizing another icon.
     NON_TOUCH_16_DIP,
-    // Largest icon specified by the page which is of type
-    // favicon_base::FAVICON.
-    NON_TOUCH_LARGEST,
-    // Largest icon specified by the page which is of type
-    // favicon_base::TOUCH_ICON or of type favicon_base::TOUCH_PRECOMPOSED_ICON.
-    TOUCH_LARGEST
+    // Largest icon specified by the page, of any type (includes favicons and
+    // touch icons).
+    LARGEST
   };
 
   FaviconDriverObserver() {}