chromeos: Show pending state for app update only.

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/ash/launcher/chrome_launcher_controller.h"
 
 #include <set>
 #include <vector>
 
 #include "ash/launcher/launcher_model.h"
@@ skipping 603 matching lines @@
   switch (type) {
     case chrome::NOTIFICATION_EXTENSION_LOADED: {
       UpdateAppLaunchersFromPref();
       break;
     }
     case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
       const content::Details<extensions::UnloadedExtensionInfo> unload_info(
           details);
       const Extension* extension = unload_info->extension;
       if (IsAppPinned(extension->id())) {
-        if (unload_info->reason == extension_misc::UNLOAD_REASON_UNINSTALL)
+        if (unload_info->reason == extension_misc::UNLOAD_REASON_UPDATE)
+          MarkAppPending(extension->id());
+        else
           DoUnpinAppsWithID(extension->id());
-        else
-          MarkAppPending(extension->id());
       }
       break;
     }
     case chrome::NOTIFICATION_PREF_CHANGED: {
       const std::string& pref_name(
           *content::Details<std::string>(details).ptr());
       if (pref_name == prefs::kPinnedLauncherApps) {
         UpdateAppLaunchersFromPref();
       } else {
         NOTREACHED() << "Unexpected pref change for " << pref_name;
@@ skipping 295 matching lines @@
   }
   model_->AddAt(index, item);
 
   if (!controller || controller->type() !=
       BrowserLauncherItemController::TYPE_EXTENSION_PANEL) {
     if (item.status != ash::STATUS_IS_PENDING)
       app_icon_loader_->FetchImage(app_id);
   }
   return id;
 }