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

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

 // 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.
 
 #ifndef IOS_CHROME_BROWSER_UI_COLLECTION_VIEW_COLLECTION_VIEW_CONTROLLER_TEST_H_
 #define IOS_CHROME_BROWSER_UI_COLLECTION_VIEW_COLLECTION_VIEW_CONTROLLER_TEST_H_
 
 #import <Foundation/Foundation.h>
 
 #include "base/compiler_specific.h"
 #import "base/ios/block_types.h"
 #import "base/mac/scoped_nsobject.h"
 #import "ios/chrome/test/block_cleanup_test.h"
 #import "ios/third_party/material_components_ios/src/components/CollectionCells/src/MaterialCollectionCells.h"
 
 @class CollectionViewController;
 
 class CollectionViewControllerTest : public BlockCleanupTest {
  public:
   CollectionViewControllerTest();
   ~CollectionViewControllerTest() override;
 
  protected:
   void TearDown() override;
 
   // Derived classes allocate their controller here.
-  virtual CollectionViewController* NewController() NS_RETURNS_RETAINED = 0;
+  virtual CollectionViewController* InstantiateController() = 0;
 
   // Tests should call this function to create their controller for testing.
   void CreateController();
 
   // Will call CreateController() if |controller_| is nil.
   CollectionViewController* controller();
 
   // Deletes the controller.
   void ResetController();
 
@@ skipping 81 matching lines @@
 
   // For |section|, deletes the item at |item|. |completion_block| is called at
   // the end of the call to -performBatchUpdates:completion:.
   void DeleteItem(int section, int item, ProceduralBlock completion_block);
 
  private:
   base::scoped_nsobject<CollectionViewController> controller_;
 };
 
 #endif  // IOS_CHROME_BROWSER_UI_COLLECTION_VIEW_COLLECTION_VIEW_CONTROLLER_TEST_H_