Move OnURLsDeleted from NTPSnippetsService to ContentSuggestionsService

components/ntp_snippets/ntp_snippets_service.cc

 // 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.
 
 #include "components/ntp_snippets/ntp_snippets_service.h"
 
 #include <algorithm>
 #include <iterator>
 #include <utility>
 
@@ skipping 173 matching lines @@
           [](const std::unique_ptr<NTPSnippet>& snippet) { return !snippet; }),
       snippets->end());
 }
 
 }  // namespace
 
 NTPSnippetsService::NTPSnippetsService(
     Observer* observer,
     CategoryFactory* category_factory,
     PrefService* pref_service,
-    history::HistoryService* history_service,
     SuggestionsService* suggestions_service,
     const std::string& application_language_code,
     NTPSnippetsScheduler* scheduler,
     std::unique_ptr<NTPSnippetsFetcher> snippets_fetcher,
     std::unique_ptr<ImageFetcher> image_fetcher,
     std::unique_ptr<ImageDecoder> image_decoder,
     std::unique_ptr<NTPSnippetsDatabase> database,
     std::unique_ptr<NTPSnippetsStatusService> status_service)
     : ContentSuggestionsProvider(observer, category_factory),
       state_(State::NOT_INITED),
       category_status_(CategoryStatus::INITIALIZING),
       pref_service_(pref_service),
       suggestions_service_(suggestions_service),
       application_language_code_(application_language_code),
       scheduler_(scheduler),
-      history_service_observer_(this),
       snippets_fetcher_(std::move(snippets_fetcher)),
       image_fetcher_(std::move(image_fetcher)),
       image_decoder_(std::move(image_decoder)),
       database_(std::move(database)),
       snippets_status_service_(std::move(status_service)),
       fetch_after_load_(false),
       nuke_after_load_(false),
       provided_category_(
           category_factory->FromKnownCategory(KnownCategories::ARTICLES)),
       thumbnail_requests_throttler_(
           pref_service,
           RequestThrottler::RequestType::CONTENT_SUGGESTION_THUMBNAIL) {
   observer->OnCategoryStatusChanged(this, provided_category_, category_status_);
   if (database_->IsErrorState()) {
     EnterState(State::ERROR_OCCURRED, CategoryStatus::LOADING_ERROR);
     return;
   }
 
-  // Can be null in tests.
-  if (history_service)
-    history_service_observer_.Add(history_service);
-
   database_->SetErrorCallback(base::Bind(&NTPSnippetsService::OnDatabaseError,
                                          base::Unretained(this)));
 
   // We transition to other states while finalizing the initialization, when the
   // database is done loading.
   database_->LoadSnippets(base::Bind(&NTPSnippetsService::OnDatabaseLoaded,
                                      base::Unretained(this)));
 }
 
 NTPSnippetsService::~NTPSnippetsService() {
@@ skipping 166 matching lines @@
 }
 
 // static
 int NTPSnippetsService::GetMaxSnippetCountForTesting() {
   return kMaxSnippetCount;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Private methods
 
-// history::HistoryServiceObserver implementation.
-void NTPSnippetsService::OnURLsDeleted(
-    history::HistoryService* history_service,
-    bool all_history,
-    bool expired,
-    const history::URLRows& deleted_rows,
-    const std::set<GURL>& favicon_urls) {
-  // We don't care about expired entries.
-  if (expired)
-    return;
-
-  if (!ready())
-    nuke_after_load_ = true;
-  else
-    NukeAllSnippets();
-}
-
-void NTPSnippetsService::HistoryServiceBeingDeleted(
-    history::HistoryService* history_service) {
-  history_service_observer_.RemoveAll();
-}
-
 // image_fetcher::ImageFetcherDelegate implementation.
 void NTPSnippetsService::OnImageDataFetched(const std::string& snippet_id,
                                             const std::string& image_data) {
   if (image_data.empty())
     return;
 
   // Only save the image if the corresponding snippet still exists.
   auto it =
       std::find_if(snippets_.begin(), snippets_.end(),
                    [&snippet_id](const std::unique_ptr<NTPSnippet>& snippet) {
@@ skipping 454 matching lines @@
 void NTPSnippetsService::UpdateCategoryStatus(CategoryStatus status) {
   if (status == category_status_)
     return;
 
   category_status_ = status;
   observer()->OnCategoryStatusChanged(this, provided_category_,
                                       category_status_);
 }
 
 }  // namespace ntp_snippets