Comment out some infobar identifiers for obsolete infobars.

components/infobars/core/infobar_delegate.h

Index: components/infobars/core/infobar_delegate.h
diff --git a/components/infobars/core/infobar_delegate.h b/components/infobars/core/infobar_delegate.h
index 16d546f926f00a2940be7d3bfed9792bb96ef50f..0cbf1c81c5183fbe84a9cdec61a5a40654f110b1 100644
--- a/components/infobars/core/infobar_delegate.h
+++ b/components/infobars/core/infobar_delegate.h
@@ -85,7 +85,7 @@ class InfoBarDelegate {
     THEME_INSTALLED_INFOBAR_DELEGATE = 15,
     GEOLOCATION_INFOBAR_DELEGATE_ANDROID = 16,
     THREE_D_API_INFOBAR_DELEGATE = 17,
-    INSECURE_CONTENT_INFOBAR_DELEGATE = 18,
+    // Removed: INSECURE_CONTENT_INFOBAR_DELEGATE = 18,
     MIDI_PERMISSION_INFOBAR_DELEGATE_ANDROID = 19,
     PROTECTED_MEDIA_IDENTIFIER_INFOBAR_DELEGATE_ANDROID = 20,
     NACL_INFOBAR_DELEGATE = 21,
@@ -124,9 +124,9 @@ class InfoBarDelegate {
     NATIVE_APP_OPEN_POLICY_INFOBAR_DELEGATE = 54,
     RE_SIGN_IN_INFOBAR_DELEGATE = 55,
     SHOW_PASSKIT_INFOBAR_ERROR_DELEGATE = 56,
-    READER_MODE_INFOBAR_DELEGATE = 57,
+    // Removed: READER_MODE_INFOBAR_DELEGATE = 57,
     SYNC_ERROR_INFOBAR_DELEGATE = 58,
-    UPGRADE_INFOBAR_DELEGATE = 59,
+    // Removed: UPGRADE_INFOBAR_DELEGATE = 59,
     CHROME_WINDOW_ERROR = 60,
     CONFIRM_DANGEROUS_DOWNLOAD = 61,
     // Removed: DESKTOP_SEARCH_REDIRECTION_INFOBAR_DELEGATE = 62,