Force-load a lazy background page whenever an extension is enabled.

chrome/browser/extensions/api/app_runtime/app_runtime_api.cc

Index: chrome/browser/extensions/api/app_runtime/app_runtime_api.cc
diff --git a/chrome/browser/extensions/api/app_runtime/app_runtime_api.cc b/chrome/browser/extensions/api/app_runtime/app_runtime_api.cc
index c52920ac8fd8c60a8f985a7ffbd57b508789b0df..7bfcaaa58113733ef5069b48f61e653cd7612195 100644
--- a/chrome/browser/extensions/api/app_runtime/app_runtime_api.cc
+++ b/chrome/browser/extensions/api/app_runtime/app_runtime_api.cc
@@ -37,10 +37,14 @@ namespace extensions {
 // static.
 void AppEventRouter::DispatchOnLaunchedEvent(
     Profile* profile, const Extension* extension) {
+  ExtensionSystem* system = ExtensionSystem::Get(profile);
   scoped_ptr<ListValue> arguments(new ListValue());
-  extensions::ExtensionSystem::Get(profile)->event_router()->
-      DispatchEventToExtension(extension->id(), kOnLaunchedEvent,
-                               arguments.Pass(), profile, GURL());
+  system->event_router()->AddLazyEventListener(kOnLaunchedEvent,
+                                               extension->id());
+  system->event_router()->DispatchEventToExtension(
+      extension->id(), kOnLaunchedEvent, arguments.Pass(), profile, GURL());
+  system->event_router()->RemoveLazyEventListener(kOnLaunchedEvent,
+                                                  extension->id());

[Matt Perry, 2012/11/29 20:24:46]

If you go this route, can you move this chunk to a helper function and update
all the call sites?

[Marijn Kruisselbrink, 2012/11/29 21:07:19]

Done.

 }
 
 // static.
@@ -68,9 +72,13 @@ void AppEventRouter::DispatchOnLaunchedEventWithFileEntry(
   items->Append(launch_item);
   launch_data->Set("items", items);
   args->Append(launch_data);
-  extensions::ExtensionSystem::Get(profile)->event_router()->
-      DispatchEventToExtension(extension->id(), kOnLaunchedEvent, args.Pass(),
-                               profile, GURL());
+  ExtensionSystem* system = ExtensionSystem::Get(profile);
+  system->event_router()->AddLazyEventListener(kOnLaunchedEvent,
+                                               extension->id());
+  system->event_router()->DispatchEventToExtension(
+      extension->id(), kOnLaunchedEvent, args.Pass(), profile, GURL());
+  system->event_router()->RemoveLazyEventListener(kOnLaunchedEvent,
+                                                  extension->id());
 }
 
 // static.
@@ -126,9 +134,13 @@ void AppEventRouter::DispatchOnLaunchedEventWithWebIntent(
   int intent_id =
       callbacks->RegisterCallback(extension, intents_dispatcher, source);
   args->Append(base::Value::CreateIntegerValue(intent_id));
-  extensions::ExtensionSystem::Get(profile)->event_router()->
-      DispatchEventToExtension(extension->id(), kOnLaunchedEvent, args.Pass(),
-                               profile, GURL());
+  ExtensionSystem* system = ExtensionSystem::Get(profile);
+  system->event_router()->AddLazyEventListener(kOnLaunchedEvent,
+                                               extension->id());
+  system->event_router()->DispatchEventToExtension(
+      extension->id(), kOnLaunchedEvent, args.Pass(), profile, GURL());
+  system->event_router()->RemoveLazyEventListener(kOnLaunchedEvent,
+                                                  extension->id());
 }
 
 bool AppRuntimePostIntentResponseFunction::RunImpl() {