Fix DefaultApps unit test

chrome/browser/ui/ash/launcher/chrome_launcher_controller_unittest.cc

 // Copyright 2013 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/ash/launcher/chrome_launcher_controller.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <map>
@@ skipping 4065 matching lines @@
             display::Screen::GetScreen()->GetPrimaryDisplay().rotation());
 
   // Manually unlock first.
   NotifyOnTaskOrientationLockRequested(task_id_none_, OrientationLock::NONE);
   EXPECT_FALSE(controller->rotation_locked());
 }
 
 TEST_P(ChromeLauncherControllerArcDefaultAppsTest, DefaultApps) {
   arc_test_.SetUp(profile());
   InitLauncherController();
-  // TODO(crbug.com/709297): Fix this workaround to prevent a TearDown crash.
-  std::vector<std::unique_ptr<AppIconLoader>> no_loaders;
-  launcher_controller_->SetAppIconLoadersForTest(no_loaders);
+
+  // Prevent safe decoding which requires IPC.
+  ArcAppIcon::DisableSafeDecodingForTesting();
 
   ArcAppListPrefs* const prefs = arc_test_.arc_app_list_prefs();
   EnablePlayStore(false);
   EXPECT_FALSE(arc::IsArcPlayStoreEnabledForProfile(profile()));
   ASSERT_TRUE(prefs->GetAppIds().size());
 
   const std::string app_id =
       ArcAppTest::GetAppId(arc_test_.fake_default_apps()[0]);
   EXPECT_EQ(ash::kInvalidShelfID,
             launcher_controller_->GetShelfIDForAppID(app_id));
@@ skipping 193 matching lines @@
   EXPECT_EQ(ash::SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS,
             shelf_controller->auto_hide());
   EXPECT_EQ(2u, shelf_controller->auto_hide_change_count());
 
   PrefService* prefs = profile()->GetTestingPrefService();
   EXPECT_EQ("Left", prefs->GetString(prefs::kShelfAlignmentLocal));
   EXPECT_EQ("Left", prefs->GetString(prefs::kShelfAlignment));
   EXPECT_EQ("Always", prefs->GetString(prefs::kShelfAutoHideBehaviorLocal));
   EXPECT_EQ("Always", prefs->GetString(prefs::kShelfAutoHideBehavior));
 }