Show alert failure for reloading unpacked extensions with bad manifest

chrome/browser/extensions/unpacked_installer.h

Index: chrome/browser/extensions/unpacked_installer.h
diff --git a/chrome/browser/extensions/unpacked_installer.h b/chrome/browser/extensions/unpacked_installer.h
index b7d2ecc44791a6e5960968d29080c6263d64bff6..853cc3979df9b7164909f0597f2bd95442db1e33 100644
--- a/chrome/browser/extensions/unpacked_installer.h
+++ b/chrome/browser/extensions/unpacked_installer.h
@@ -64,10 +64,6 @@ class UnpackedInstaller
     require_modern_manifest_version_ = val;
   }
 
-  void set_on_failure_callback(const OnFailureCallback& callback) {
-    on_failure_callback_ = callback;
-  }
-
   void set_be_noisy_on_failure(bool be_noisy_on_failure) {
     be_noisy_on_failure_ = be_noisy_on_failure;
   }
@@ -130,9 +126,6 @@ class UnpackedInstaller
   // version.
   bool require_modern_manifest_version_;
 
-  // An optional callback to set in order to be notified of failure.
-  OnFailureCallback on_failure_callback_;
-
   // Whether or not to be noisy (show a dialog) on failure. Defaults to true.
   bool be_noisy_on_failure_;