Switch platform apps from a declarative launch container to handling an onLaunched event.

chrome/browser/extensions/api/app/app_api.h

Index: chrome/browser/extensions/api/app/app_api.h
diff --git a/chrome/browser/extensions/api/app/app_api.h b/chrome/browser/extensions/api/app/app_api.h
index 66299d65bc8fa92b45c2483e53a0ece7c3ae71f8..e2789c9d05a400499cd000a5c2f745bfe2b1481b 100644
--- a/chrome/browser/extensions/api/app/app_api.h
+++ b/chrome/browser/extensions/api/app/app_api.h
@@ -8,6 +8,11 @@
 
 #include "chrome/browser/extensions/extension_function.h"
 
+class Extension;
+class Profile;
+
+namespace extensions {
+
 class AppNotifyFunction : public SyncExtensionFunction {
   virtual ~AppNotifyFunction() {}
   virtual bool RunImpl() OVERRIDE;
@@ -20,4 +25,13 @@ class AppClearAllNotificationsFunction : public SyncExtensionFunction {
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.app.clearAllNotifications");
 };
 
+class AppEventRouter {
+ public:
+  // Dispatches the onLaunched event to the given app.
+  static void DispatchOnLaunchedEvent(Profile* profile,
+                                      const Extension* extension);
+};
+
+}  // namespace extensions
+
 #endif  // CHROME_BROWSER_EXTENSIONS_API_APP_APP_API_H_