Count blacklisting as an extension being disabled. Correctly.

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 33a608de54bc9bf81d58e6aa26c71ef1482ee662..92dbbf0118a7a57ef40f84eccd0399af9d0ed89d 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -780,6 +780,7 @@ bool ExtensionService::IsExtensionEnabled(
   // If the extension hasn't been loaded yet, check the prefs for it. Assume
   // enabled unless otherwise noted.
   return !extension_prefs_->IsExtensionDisabled(extension_id) &&
+         !extension_prefs_->IsExtensionBlacklisted(extension_id) &&
          !extension_prefs_->IsExternalExtensionUninstalled(extension_id);
 }