Add per-section clearing and dismissed suggestions to snippets-internals

components/ntp_snippets/offline_pages/offline_page_suggestions_provider.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/offline_pages/offline_page_suggestions_provider.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 31 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // Private methods
 
 std::vector<Category> OfflinePageSuggestionsProvider::GetProvidedCategories() {
   return std::vector<Category>({provided_category_});
 }
 
 CategoryStatus OfflinePageSuggestionsProvider::GetCategoryStatus(
     Category category) {
+  DCHECK_EQ(category, provided_category_);
   return category_status_;
 }
 
 void OfflinePageSuggestionsProvider::DismissSuggestion(
     const std::string& suggestion_id) {
   // TODO(pke): Implement some "dont show on NTP anymore" behaviour,
   // then also implement ClearDismissedSuggestionsForDebugging.
 }
 
 void OfflinePageSuggestionsProvider::FetchSuggestionImage(
     const std::string& suggestion_id,
     const ImageFetchedCallback& callback) {
   // TODO(pke): Fetch proper thumbnail from OfflinePageModel once it's available
   // there.
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(callback, suggestion_id, gfx::Image()));
 }
 
-void OfflinePageSuggestionsProvider::ClearCachedSuggestionsForDebugging() {
+void OfflinePageSuggestionsProvider::ClearCachedSuggestionsForDebugging(
+    Category category) {
+  DCHECK_EQ(category, provided_category_);
   // Ignored.
 }
 
-void OfflinePageSuggestionsProvider::ClearDismissedSuggestionsForDebugging() {
+std::vector<ContentSuggestion>
+OfflinePageSuggestionsProvider::GetDismissedSuggestionsForDebugging(
+    Category category) {
+  DCHECK_EQ(category, provided_category_);
+  // TODO(pke): Implement when dismissed suggestions are supported.
+  return std::vector<ContentSuggestion>();
+}
+
+void OfflinePageSuggestionsProvider::ClearDismissedSuggestionsForDebugging(
+    Category category) {
+  DCHECK_EQ(category, provided_category_);
   // TODO(pke): Implement when dismissed suggestions are supported.
 }
 
 void OfflinePageSuggestionsProvider::OfflinePageModelLoaded(
     OfflinePageModel* model) {
   DCHECK_EQ(offline_page_model_, model);
 }
 
 void OfflinePageSuggestionsProvider::OfflinePageModelChanged(
     OfflinePageModel* model) {
@@ skipping 45 matching lines @@
 void OfflinePageSuggestionsProvider::NotifyStatusChanged(
     CategoryStatus new_status) {
   if (category_status_ == new_status)
     return;
   category_status_ = new_status;
 
   observer()->OnCategoryStatusChanged(this, provided_category_, new_status);
 }
 
 }  // namespace ntp_snippets