[Android] Adding content settings provider for notification channels

chrome/browser/content_settings/host_content_settings_map_factory.cc

Index: chrome/browser/content_settings/host_content_settings_map_factory.cc
diff --git a/chrome/browser/content_settings/host_content_settings_map_factory.cc b/chrome/browser/content_settings/host_content_settings_map_factory.cc
index c1a9a79d48e4064f181e7515d37a71b5934cba60..df9fc220daaa6aaed0131fb4cd3f24233766e370 100644
--- a/chrome/browser/content_settings/host_content_settings_map_factory.cc
+++ b/chrome/browser/content_settings/host_content_settings_map_factory.cc
@@ -7,6 +7,7 @@
 #include <utility>
 
 #include "base/feature_list.h"
+#include "chrome/browser/notifications/android_settings_provider.h"
 #include "chrome/browser/prefs/pref_service_syncable_util.h"
 #include "chrome/browser/profiles/off_the_record_profile_impl.h"
 #include "chrome/browser/profiles/profile.h"
@@ -112,6 +113,13 @@ scoped_refptr<RefcountedKeyedService>
   }
 #endif // BUILDFLAG(ENABLE_SUPERVISED_USERS)
 
+#if defined(OS_ANDROID)
+  auto android_system_provider =
+      base::MakeUnique<content_settings::AndroidSettingsProvider>();
+  settings_map->RegisterProvider(
+      HostContentSettingsMap::ANDROID_SETTINGS_PROVIDER,
+      std::move(android_system_provider));
+#endif
   return settings_map;
 }