Remove ContentSuggestionsProvider::GetProvidedCategories().

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 198 matching lines @@
       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),
       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;
   }
 
   database_->SetErrorCallback(base::Bind(&NTPSnippetsService::OnDatabaseError,
                                          base::Unretained(this)));
 
   // We transition to other states while finalizing the initialization, when the
   // database is done loading.
@@ skipping 39 matching lines @@
   if (ready()) {
     base::Time now = base::Time::Now();
     scheduler_->Schedule(
         GetFetchingIntervalWifiCharging(), GetFetchingIntervalWifi(now),
         GetFetchingIntervalFallback(), GetRescheduleTime(now));
   } else {
     scheduler_->Unschedule();
   }
 }
 
-std::vector<Category> NTPSnippetsService::GetProvidedCategories() {
-  return std::vector<Category>({provided_category_});
-}
-
 CategoryStatus NTPSnippetsService::GetCategoryStatus(Category category) {
   DCHECK(category.IsKnownCategory(KnownCategories::ARTICLES));
   return category_status_;
 }
 
 CategoryInfo NTPSnippetsService::GetCategoryInfo(Category category) {
   return CategoryInfo(
       l10n_util::GetStringUTF16(IDS_NTP_ARTICLE_SUGGESTIONS_SECTION_HEADER),
       ContentSuggestionsCardLayout::FULL_CARD, /* has_more_button */ false);
 }
@@ skipping 547 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