Implement app launch changes for app runtime extension proposal.

extensions/browser/api/app_runtime/app_runtime_api.h

Index: extensions/browser/api/app_runtime/app_runtime_api.h
diff --git a/extensions/browser/api/app_runtime/app_runtime_api.h b/extensions/browser/api/app_runtime/app_runtime_api.h
index 1548387b2e57d4b0040b00cd457c2fc15139d51c..b9873164381a5e6bae2792311cb393ed4e97d299 100644
--- a/extensions/browser/api/app_runtime/app_runtime_api.h
+++ b/extensions/browser/api/app_runtime/app_runtime_api.h
@@ -75,6 +75,12 @@ class AppRuntimeEventRouter {
                                              const std::string& handler_id,
                                              const GURL& url,
                                              const GURL& referrer_url);
+
+  // Dispatch an onLaunched event with a specific action.
+  static void DispatchOnLaunchedEventWithAction(
+      content::BrowserContext* context,
+      const Extension* extension,
+      ActionData action_data);
 };
 
 }  // namespace extensions