[ObjC ARC] Converts ios/chrome/browser/ui/settings:unit_tests to ARC.

ios/chrome/browser/ui/collection_view/collection_view_controller_test.mm

 // 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.
 
 #import "ios/chrome/browser/ui/collection_view/collection_view_controller_test.h"
 
 #include "base/logging.h"
 #import "base/mac/foundation_util.h"
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_detail_item.h"
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_footer_item.h"
@@ skipping 16 matching lines @@
 
 void CollectionViewControllerTest::TearDown() {
   // Delete the controller before deleting other test variables, such as a
   // profile, to ensure things are cleaned up in the same order as in Chrome.
   controller_.reset();
   BlockCleanupTest::TearDown();
 }
 
 void CollectionViewControllerTest::CreateController() {
   DCHECK(!controller_);
-  controller_.reset(NewController());
+  controller_.reset(InstantiateController());
   // Force the model to be loaded.
   [controller_ loadModel];
   // Force the collectionView to be built.
   EXPECT_TRUE([controller_ view]);
 }
 
 CollectionViewController* CollectionViewControllerTest::controller() {
   if (!controller_)
     CreateController();
   return controller_.get();
@@ skipping 159 matching lines @@
     [strong_controller collectionView:[strong_controller collectionView]
            didDeleteItemsAtIndexPaths:@[ index_path ]];
     if (completion_block) {
       completion_block();
     }
   };
 
   [[controller_ collectionView] performBatchUpdates:batch_updates
                                          completion:completion];
 }