Remove snippet_id from ImageFetchedCallback

components/ntp_snippets/content_suggestions_service.cc

 // 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.
 
 #include "components/ntp_snippets/content_suggestions_service.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/bind.h"
@@ skipping 48 matching lines @@
     return no_suggestions_;
   return iterator->second;
 }
 
 void ContentSuggestionsService::FetchSuggestionImage(
     const std::string& suggestion_id,
     const ImageFetchedCallback& callback) {
   if (!id_category_map_.count(suggestion_id)) {
     LOG(WARNING) << "Requested image for unknown suggestion " << suggestion_id;
     base::ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::Bind(callback, suggestion_id, gfx::Image()));
+        FROM_HERE, base::Bind(callback, gfx::Image()));
     return;
   }
   Category category = id_category_map_.at(suggestion_id);
   if (!providers_by_category_.count(category)) {
     LOG(WARNING) << "Requested image for suggestion " << suggestion_id
                  << " for unavailable category " << category;
     base::ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::Bind(callback, suggestion_id, gfx::Image()));
+        FROM_HERE, base::Bind(callback, gfx::Image()));
     return;
   }
   providers_by_category_[category]->FetchSuggestionImage(suggestion_id,
                                                          callback);
 }
 
 void ContentSuggestionsService::ClearAllCachedSuggestions() {
   suggestions_by_category_.clear();
   id_category_map_.clear();
   for (const auto& category_provider_pair : providers_by_category_) {
@@ skipping 167 matching lines @@
   return true;
 }
 
 void ContentSuggestionsService::NotifyCategoryStatusChanged(Category category) {
   FOR_EACH_OBSERVER(
       Observer, observers_,
       OnCategoryStatusChanged(category, GetCategoryStatus(category)));
 }
 
 }  // namespace ntp_snippets