Lazy-creates BluetoothAdapter in ExtensionBluetoothEventRouter (EBEE).

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index e2381e731014bdf8e762a256b30ddc9ea9696286..860581bd07b24329eef4f49af2512e4eb32c12bb 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -556,6 +556,18 @@ void ExtensionService::InitEventRouters() {
   event_routers_initialized_ = true;
 }
 
+void ExtensionService::NotifyExtensionEventRoutersOnListenerAdded(
+    const std::string& event_name) {
+  if (bluetooth_event_router_.get())
+    bluetooth_event_router_->OnEventListenerAdded(event_name);
+}
+
+void ExtensionService::NotifyExtensionEventRoutersOnListenerRemoved(
+    const std::string& event_name) {
+  if (bluetooth_event_router_.get())
+    bluetooth_event_router_->OnEventListenerRemoved(event_name);
+}
+
 void ExtensionService::OnProfileSyncServiceShutdown() {
   // TODO(akalin): Move this block to Shutdown() once
   // http://crbug.com/153827 is fixed.