Add a feature which, when enabled, blocks permissions after X prompt dismissals.

components/content_settings/core/browser/website_settings_registry.cc

Index: components/content_settings/core/browser/website_settings_registry.cc
diff --git a/components/content_settings/core/browser/website_settings_registry.cc b/components/content_settings/core/browser/website_settings_registry.cc
index 0bbdebaa90080af2b472699b17322370ad8c1ef4..62ec02addc5670dde9220111e9e1131c1213b4ec 100644
--- a/components/content_settings/core/browser/website_settings_registry.cc
+++ b/components/content_settings/core/browser/website_settings_registry.cc
@@ -139,6 +139,12 @@ void WebsiteSettingsRegistry::Init() {
            WebsiteSettingsInfo::REQUESTING_ORIGIN_AND_TOP_LEVEL_ORIGIN_SCOPE,
            DESKTOP | PLATFORM_ANDROID,
            WebsiteSettingsInfo::DONT_INHERIT_IN_INCOGNITO);
+  Register(CONTENT_SETTINGS_TYPE_PROMPT_NO_DECISION_COUNT,
+           "prompt-no-decision-count", nullptr, WebsiteSettingsInfo::UNSYNCABLE,
+           WebsiteSettingsInfo::NOT_LOSSY,
+           WebsiteSettingsInfo::REQUESTING_ORIGIN_ONLY_SCOPE,
+           DESKTOP | PLATFORM_ANDROID,
+           WebsiteSettingsInfo::INHERIT_IN_INCOGNITO);
 }
 
 }  // namespace content_settings