[NTP Snippets] Cleanups from clang-tidy

components/ntp_snippets/ntp_snippets_service.h

 // Copyright 2015 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 COMPONENTS_NTP_SNIPPETS_NTP_SNIPPETS_SERVICE_H_
 #define COMPONENTS_NTP_SNIPPETS_NTP_SNIPPETS_SERVICE_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 182 matching lines @@
     // and the service can't be used anymore.
     ERROR_OCCURRED
   };
 
   // Returns the URL of the image of a snippet if it is among the current or
   // among the archived snippets in |category|. Returns an empty URL, otherwise.
   GURL FindSnippetImageUrl(Category category,
                            const std::string& snippet_id) const;
 
   // image_fetcher::ImageFetcherDelegate implementation.
-  void OnImageDataFetched(const std::string& snippet_id,
+  void OnImageDataFetched(const std::string& suggestion_id,
                           const std::string& image_data) override;
 
   // Callbacks for the NTPSnippetsDatabase.
   void OnDatabaseLoaded(NTPSnippet::PtrVector snippets);
   void OnDatabaseError();
 
   // Callback for the SuggestionsService.
   void OnSuggestionsChanged(const suggestions::SuggestionsProfile& suggestions);
 
   // Callback for the NTPSnippetsFetcher.
@@ skipping 145 matching lines @@
 
   // Request throttler for limiting requests to thumbnail images.
   RequestThrottler thumbnail_requests_throttler_;
 
   DISALLOW_COPY_AND_ASSIGN(NTPSnippetsService);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_NTP_SNIPPETS_SERVICE_H_