Filter out Android system packages from Chrome OS notification settings.

chrome/browser/notifications/arc_application_notifier_source_chromeos.cc

 // Copyright 2016 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/notifications/arc_application_notifier_source_chromeos.h"
 
 #include <set>
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 28 matching lines @@
     return std::vector<std::unique_ptr<message_center::Notifier>>();
   }
   const std::vector<std::string>& app_ids = app_list->GetAppIds();
   std::vector<std::unique_ptr<message_center::Notifier>> results;
 
   last_profile_ = profile;
   app_list->AddObserver(this);
 
   for (const std::string& app_id : app_ids) {
     const auto app = app_list->GetApp(app_id);
-    if (!app)
+    // Handle packages having multiple launcher activities.
+    if (!app || package_to_app_ids_.count(app->package_name))
       continue;
-    // Handle packages having multiple launcher activities.
-    if (package_to_app_ids_.count(app->package_name))
+
+    const auto package = app_list->GetPackage(app->package_name);
+    if (!package || package->system)
       continue;
 
     // Load icons for notifier.
     std::unique_ptr<ArcAppIcon> icon(
         new ArcAppIcon(profile, app_id,
                        // ARC icon is available only for 48x48 dips.
                        kArcAppIconSizeInDp,
                        // The life time of icon must shorter than |this|.
                        this));
     icon->LoadForScaleFactor(
@@ skipping 57 matching lines @@
 
 void ArcApplicationNotifierSourceChromeOS::StopObserving() {
   if (!last_profile_)
     return;
   ArcAppListPrefs* const app_list = ArcAppListPrefs::Get(last_profile_);
   app_list->RemoveObserver(this);
   last_profile_ = nullptr;
 }
 
 }  // namespace arc