chromeos: Show pending state for app update only.

chrome/browser/ui/views/ash/launcher/chrome_launcher_controller.cc

Index: chrome/browser/ui/views/ash/launcher/chrome_launcher_controller.cc
diff --git a/chrome/browser/ui/views/ash/launcher/chrome_launcher_controller.cc b/chrome/browser/ui/views/ash/launcher/chrome_launcher_controller.cc
index 342e828997ad498abfbe968eb8520f46f2108118..7b995427791de4d0d31e816eee5d5c20a202e10d 100644
--- a/chrome/browser/ui/views/ash/launcher/chrome_launcher_controller.cc
+++ b/chrome/browser/ui/views/ash/launcher/chrome_launcher_controller.cc
@@ -621,10 +621,10 @@ void ChromeLauncherController::Observe(
           details);
       const Extension* extension = unload_info->extension;
       if (IsAppPinned(extension->id())) {
-        if (unload_info->reason == extension_misc::UNLOAD_REASON_UNINSTALL)
-          DoUnpinAppsWithID(extension->id());
-        else
+        if (unload_info->reason == extension_misc::UNLOAD_REASON_UPDATE)
           MarkAppPending(extension->id());
+        else
+          DoUnpinAppsWithID(extension->id());
       }
       break;
     }