Update SSL error handling code to account for Subject CN deprecation

chrome/browser/ssl/ssl_error_handler.h

Index: chrome/browser/ssl/ssl_error_handler.h
diff --git a/chrome/browser/ssl/ssl_error_handler.h b/chrome/browser/ssl/ssl_error_handler.h
index f0dc06b43adeac1ba7f45758bdf57d8c99c4b9b3..319eb612184784a1e91c865a775d112b432bb441 100644
--- a/chrome/browser/ssl/ssl_error_handler.h
+++ b/chrome/browser/ssl/ssl_error_handler.h
@@ -66,15 +66,16 @@ class SSLErrorHandler : public content::WebContentsUserData<SSLErrorHandler>,
   // Public for testing.
   enum UMAEvent {
     HANDLE_ALL = 0,
-    SHOW_CAPTIVE_PORTAL_INTERSTITIAL_NONOVERRIDABLE,
-    SHOW_CAPTIVE_PORTAL_INTERSTITIAL_OVERRIDABLE,
-    SHOW_SSL_INTERSTITIAL_NONOVERRIDABLE,
-    SHOW_SSL_INTERSTITIAL_OVERRIDABLE,
-    WWW_MISMATCH_FOUND,
-    WWW_MISMATCH_URL_AVAILABLE,
-    WWW_MISMATCH_URL_NOT_AVAILABLE,
-    SHOW_BAD_CLOCK,
-    CAPTIVE_PORTAL_CERT_FOUND,
+    SHOW_CAPTIVE_PORTAL_INTERSTITIAL_NONOVERRIDABLE = 1,
+    SHOW_CAPTIVE_PORTAL_INTERSTITIAL_OVERRIDABLE = 2,
+    SHOW_SSL_INTERSTITIAL_NONOVERRIDABLE = 3,
+    SHOW_SSL_INTERSTITIAL_OVERRIDABLE = 4,
+    WWW_MISMATCH_FOUND = 5,  // Deprecated in M59 by WWW_MISMATCH_FOUND_IN_SAN.
+    WWW_MISMATCH_URL_AVAILABLE = 6,
+    WWW_MISMATCH_URL_NOT_AVAILABLE = 7,
+    SHOW_BAD_CLOCK = 8,
+    CAPTIVE_PORTAL_CERT_FOUND = 9,
+    WWW_MISMATCH_FOUND_IN_SAN = 10,
     SSL_ERROR_HANDLER_EVENT_COUNT
   };