Cleanup ContentSuggestions cells

ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_button_item.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_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_TEXT_ITEM_H_
-#define IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_TEXT_ITEM_H_
+#ifndef IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_CELLS_CONTENT_SUGGESTIONS_BUTTON_ITEM_H_
+#define IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_CELLS_CONTENT_SUGGESTIONS_BUTTON_ITEM_H_
 
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_item.h"
 #import "ios/third_party/material_components_ios/src/components/CollectionCells/src/MaterialCollectionCells.h"
 
-// Item for a suggestions item with a title and subtitle.
-@interface ContentSuggestionsTextItem : CollectionViewItem
+// Item for a suggestions item with a title button and subtitle.
+@interface ContentSuggestionsButtonItem : CollectionViewItem
 
 // Init a suggestions item with a |title| and a |subtitle|. |type| is the type
 // of the item.
 - (instancetype)initWithType:(NSInteger)type
                        title:(NSString*)title
                     subtitle:(NSString*)subtitle NS_DESIGNATED_INITIALIZER;
 - (instancetype)initWithType:(NSInteger)type NS_UNAVAILABLE;
 
 @end
 
-// Corresponding cell for a suggestion item.
-@interface ContentSuggestionsTextCell : MDCCollectionViewCell
+// Corresponding cell for the item.
+@interface ContentSuggestionsButtonCell : MDCCollectionViewCell
 
 @property(nonatomic, readonly, strong) UIButton* titleButton;
 @property(nonatomic, readonly, strong) UILabel* detailTextLabel;
 
 @end
 
-#endif  // IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_TEXT_ITEM_H_
+#endif  // IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_CELLS_CONTENT_SUGGESTIONS_BUTTON_ITEM_H_