Ensure app install is aborted when the install dialog is closed

chrome/browser/ui/views/extensions/extension_install_dialog_view.h

Index: chrome/browser/ui/views/extensions/extension_install_dialog_view.h
diff --git a/chrome/browser/ui/views/extensions/extension_install_dialog_view.h b/chrome/browser/ui/views/extensions/extension_install_dialog_view.h
index 604e9ae1e6a874f6398f10cf122b2137550e71d7..3477b46d435d14e6d65468e56f7cd96a16c4b6d9 100644
--- a/chrome/browser/ui/views/extensions/extension_install_dialog_view.h
+++ b/chrome/browser/ui/views/extensions/extension_install_dialog_view.h
@@ -149,6 +149,10 @@ class ExtensionInstallDialogView : public views::DialogDelegateView,
   // ExperienceSampling: Track this UI event.
   scoped_ptr<extensions::ExperienceSamplingEvent> sampling_event_;
 
+  // Set to true once the user's selection has been received and the
+  // |delegate_| has been notified.
+  bool handled_result_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionInstallDialogView);
 };