[Extensions Bindings] Introduce a supportsLazyListeners property

extensions/renderer/bindings/api_event_handler.cc

Index: extensions/renderer/bindings/api_event_handler.cc
diff --git a/extensions/renderer/bindings/api_event_handler.cc b/extensions/renderer/bindings/api_event_handler.cc
index e1c1200eb2ec75b240ffece6982bbbf8d21d131f..c621a778df0ebf65f270704fe2208ccb33169fd0 100644
--- a/extensions/renderer/bindings/api_event_handler.cc
+++ b/extensions/renderer/bindings/api_event_handler.cc
@@ -26,7 +26,7 @@ namespace {
 
 void DoNothingOnListenersChanged(binding::EventListenersChanged change,
                                  const base::DictionaryValue* filter,
-                                 bool was_manual,
+                                 bool update_lazy_listeners,
                                  v8::Local<v8::Context> context) {}
 
 const char kExtensionAPIEventPerContextKey[] = "extension_api_events";
@@ -118,6 +118,7 @@ APIEventHandler::~APIEventHandler() {}
 v8::Local<v8::Object> APIEventHandler::CreateEventInstance(
     const std::string& event_name,
     bool supports_filters,
+    bool supports_lazy_listeners,
     int max_listeners,
     bool notify_on_change,
     v8::Local<v8::Context> context) {
@@ -136,10 +137,11 @@ v8::Local<v8::Object> APIEventHandler::CreateEventInstance(
   std::unique_ptr<APIEventListeners> listeners;
   if (supports_filters) {
     listeners = base::MakeUnique<FilteredEventListeners>(
-        updated, event_name, max_listeners, &event_filter_);
+        updated, event_name, max_listeners, supports_lazy_listeners,
+        &event_filter_);
   } else {
-    listeners =
-        base::MakeUnique<UnfilteredEventListeners>(updated, max_listeners);
+    listeners = base::MakeUnique<UnfilteredEventListeners>(
+        updated, max_listeners, supports_lazy_listeners);
   }
 
   gin::Handle<EventEmitter> emitter_handle =
@@ -164,7 +166,8 @@ v8::Local<v8::Object> APIEventHandler::CreateAnonymousEventInstance(
   bool supports_filters = false;
   std::unique_ptr<APIEventListeners> listeners =
       base::MakeUnique<UnfilteredEventListeners>(
-          base::Bind(&DoNothingOnListenersChanged), binding::kNoListenerMax);
+          base::Bind(&DoNothingOnListenersChanged), binding::kNoListenerMax,
+          false);
   gin::Handle<EventEmitter> emitter_handle =
       gin::CreateHandle(context->GetIsolate(),
                         new EventEmitter(supports_filters, std::move(listeners),