Make clicking the restart bubble for crashed apps work.

apps/launcher.cc

Index: apps/launcher.cc
diff --git a/apps/launcher.cc b/apps/launcher.cc
index f8f00517d708dd41cc48835893e8e7bbce676ea0..32372274949a3f8a450501560e9e43916c74f2e2 100644
--- a/apps/launcher.cc
+++ b/apps/launcher.cc
@@ -390,9 +390,10 @@ void RestartPlatformApp(Profile* profile, const Extension* extension) {
       extension_service()->extension_prefs();
   bool had_windows = extension_prefs->IsActive(extension->id());
   extension_prefs->SetIsActive(extension->id(), false);
-  bool listening_to_launch = event_router->
-      ExtensionHasEventListener(extension->id(),
-                                app_runtime::OnLaunched::kEventName);
+  std::set<std::string> events =

[tapted, 2013/12/13 04:34:24]

nit: you could avoid the local `events` variable with something like:

bool listening_to_launch = event_router->GetRegisteredEvents(extension->id())
    .count(app_runtime::OnLaunched::kEventName) != 0;

Also maybe a comment like `Read from the events registered in prefs, since
listeners have not yet been created.`. Assuming that's true :) [that's my
reading of the diff anyway].

[koz (OOO until 15th September), 2013/12/16 01:49:00]

Sam has informed me of ContainsKey() which seems like the best of both worlds. I
added the comment above.

+      event_router->GetRegisteredEvents(extension->id());
+  bool listening_to_launch =
+      events.find(app_runtime::OnLaunched::kEventName) != events.end();
 
   if (listening_to_launch && had_windows)
     LaunchPlatformAppWithNoData(profile, extension);