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 c1134a74d5592e7a0a968cfed4587bca300d5808..7d9d13a4bcc5c1981847dfa2b09811c23c7b69ab 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.