Improve the UI for disabling off-store extension install.

chrome/browser/download/download_shelf_context_menu.cc

Index: chrome/browser/download/download_shelf_context_menu.cc
diff --git a/chrome/browser/download/download_shelf_context_menu.cc b/chrome/browser/download/download_shelf_context_menu.cc
index d73e3ef8bef1284e988ca8b5b64dcb4f0647eb58..590099a1fc51a478ccbe8cd1bf75624c1c205202 100644
--- a/chrome/browser/download/download_shelf_context_menu.cc
+++ b/chrome/browser/download/download_shelf_context_menu.cc
@@ -53,9 +53,7 @@ bool DownloadShelfContextMenu::IsCommandIdEnabled(int command_id) const {
           !download_item_->IsTemporary();
     case OPEN_WHEN_COMPLETE:
       return download_item_->CanShowInFolder() &&
-          !download_item_->IsTemporary() &&
-          (!Extension::IsExtension(download_item_->GetTargetName()) ||

[Aaron Boodman, 2012/05/24 09:08:53]

It's no longer important to prevent extensions from 'opening'... they just get
blocked later.

-           extensions::switch_utils::IsOffStoreInstallEnabled());
+          !download_item_->IsTemporary();
     case ALWAYS_OPEN_TYPE:
       // For temporary downloads, the target filename might be a temporary
       // filename. Don't base an "Always open" decision based on it. Also