Remove ContentSuggestionsProvider::GetProvidedCategories().

components/ntp_snippets/physical_web_pages/physical_web_page_suggestions_provider.cc

Index: components/ntp_snippets/physical_web_pages/physical_web_page_suggestions_provider.cc
diff --git a/components/ntp_snippets/physical_web_pages/physical_web_page_suggestions_provider.cc b/components/ntp_snippets/physical_web_pages/physical_web_page_suggestions_provider.cc
index c77fd77ae28bb5a5d454e4c3c472d1ba93dfe85f..35f1af780f7549c836afb49211384c0388337f3e 100644
--- a/components/ntp_snippets/physical_web_pages/physical_web_page_suggestions_provider.cc
+++ b/components/ntp_snippets/physical_web_pages/physical_web_page_suggestions_provider.cc
@@ -28,7 +28,9 @@ PhysicalWebPageSuggestionsProvider::PhysicalWebPageSuggestionsProvider(
     : ContentSuggestionsProvider(observer, category_factory),
       category_status_(CategoryStatus::AVAILABLE_LOADING),
       provided_category_(category_factory->FromKnownCategory(
-          KnownCategories::PHYSICAL_WEB_PAGES)) {}
+          KnownCategories::PHYSICAL_WEB_PAGES)) {
+  observer->OnCategoryStatusChanged(this, provided_category_, category_status_);
+}
 
 PhysicalWebPageSuggestionsProvider::~PhysicalWebPageSuggestionsProvider() {}
 
@@ -55,11 +57,6 @@ void PhysicalWebPageSuggestionsProvider::OnDisplayableUrlsChanged(
                                std::move(suggestions));
 }
 
-std::vector<Category>
-PhysicalWebPageSuggestionsProvider::GetProvidedCategories() {
-  return std::vector<Category>({provided_category_});
-}
-
 CategoryStatus PhysicalWebPageSuggestionsProvider::GetCategoryStatus(
     Category category) {
   return category_status_;