Move ContentSuggestions identifiers to custom target

ios/chrome/browser/ui/content_suggestions/content_suggestions_article_item.h

 // Copyright 2017 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_ARTICLE_ITEM_H_
 #define IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_ARTICLE_ITEM_H_
 
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_item.h"
-#import "ios/chrome/browser/ui/content_suggestions/content_suggestion_identifier.h"
+#import "ios/chrome/browser/ui/content_suggestions/identifier/content_suggestion_identifier.h"
 #import "ios/third_party/material_components_ios/src/components/CollectionCells/src/MaterialCollectionCells.h"
-#include "url/gurl.h"
 
 namespace base {
 class Time;
 }
 
 @class ContentSuggestionsArticleItem;
+class GURL;
 
 // Delegate for a ContentSuggestionsArticleItem.
 @protocol ContentSuggestionsArticleItemDelegate
 
 // Loads the image associated with this item.
 - (void)loadImageForArticleItem:(ContentSuggestionsArticleItem*)articleItem;
 
 @end
 
 // Item for an article in the suggestions.
@@ skipping 24 matching lines @@
 
 @property(nonatomic, readonly, strong) UILabel* titleLabel;
 @property(nonatomic, readonly, strong) UILabel* subtitleLabel;
 @property(nonatomic, readonly, strong) UIImageView* imageView;
 
 - (void)setPublisherName:(NSString*)publisherName date:(base::Time)publishDate;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_ARTICLE_ITEM_H_