Add chrome.runtime.onStartup, which is fired on browser start.

chrome/browser/extensions/lazy_background_task_queue.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/lazy_background_task_queue.h"
 
 #include "base/callback.h"
 #include "base/message_loop.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
@@ skipping 25 matching lines @@
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
                  content::Source<Profile>(profile));
 }
 
 LazyBackgroundTaskQueue::~LazyBackgroundTaskQueue() {
 }
 
 bool LazyBackgroundTaskQueue::ShouldEnqueueTask(
     Profile* profile, const Extension* extension) {
   DCHECK(extension);
-  if (extension->has_lazy_background_page()) {
+  if (extension->has_background_page()) {
     ExtensionProcessManager* pm =
          ExtensionSystem::Get(profile)->process_manager();
     ExtensionHost* background_host =
         pm->GetBackgroundHostForExtension(extension->id());
     if (!background_host || !background_host->did_stop_loading())
       return true;
     if (pm->IsBackgroundHostClosing(extension->id()))
       pm->CancelSuspend(extension);
   }
 
   return false;
 }
 
 void LazyBackgroundTaskQueue::AddPendingTask(
     Profile* profile,
     const std::string& extension_id,
     const PendingTask& task) {
   PendingTasksList* tasks_list = NULL;
   PendingTasksKey key(profile, extension_id);
   PendingTasksMap::iterator it = pending_tasks_.find(key);
   if (it == pending_tasks_.end()) {
     tasks_list = new PendingTasksList();
     pending_tasks_[key] = linked_ptr<PendingTasksList>(tasks_list);
 
-    // If this is the first enqueued task, and we're not waiting for the
-    // background page to unload, ensure the background page is loaded.
-    if (pending_page_loads_.count(key) == 0)
-      StartLazyBackgroundPage(profile, extension_id);
+    const Extension* extension =
+        ExtensionSystem::Get(profile)->extension_service()->
+            extensions()->GetByID(extension_id);
+    if (extension && extension->has_lazy_background_page()) {
+      // If this is the first enqueued task, and we're not waiting for the
+      // background page to unload, ensure the background page is loaded.
+      if (pending_page_loads_.count(key) == 0)
+        StartLazyBackgroundPage(profile, extension_id);
+    }
   } else {
     tasks_list = it->second.get();
   }
 
   tasks_list->push_back(task);
 }
 
 void LazyBackgroundTaskQueue::StartLazyBackgroundPage(
     Profile* profile, const std::string& extension_id) {
   ExtensionProcessManager* pm =
        ExtensionSystem::Get(profile)->process_manager();
   if (pm->IsBackgroundHostClosing(extension_id)) {
     // When the background host finishes closing, we will reload it.
+    // TODO(mpcomplete): I think pending_page_loads_ is obsolete, and
+    // should be removed. http://crbug.com/136469
     pending_page_loads_.insert(PendingTasksKey(profile, extension_id));
     return;
   }
 
   const Extension* extension =
       ExtensionSystem::Get(profile)->extension_service()->
           extensions()->GetByID(extension_id);
   if (extension) {
     DCHECK(extension->has_lazy_background_page());
     pm->IncrementLazyKeepaliveCount(extension);
     pm->CreateBackgroundHost(extension, extension->GetBackgroundURL());
   }
 
   pending_page_loads_.erase(PendingTasksKey(profile, extension_id));
 }
 
 void LazyBackgroundTaskQueue::ProcessPendingTasks(
     ExtensionHost* host,
     Profile* profile,
     const Extension* extension) {
-  if (!profile->IsSameProfile(profile_) ||
-      !extension->has_lazy_background_page())
+  if (!profile->IsSameProfile(profile_))
     return;
 
   PendingTasksKey key(profile, extension->id());
   PendingTasksMap::iterator map_it = pending_tasks_.find(key);
   if (map_it == pending_tasks_.end()) {
-    CHECK(!host);  // lazy page should not load without any pending tasks
+    if (extension->has_lazy_background_page())
+      CHECK(!host);  // lazy page should not load without any pending tasks
     return;
   }
 
   // Swap the pending tasks to a temporary, to avoid problems if the task
   // list is modified during processing.
   PendingTasksList tasks;
   tasks.swap(*map_it->second);
   for (PendingTasksList::const_iterator it = tasks.begin();
        it != tasks.end(); ++it) {
     it->Run(host);
   }
 
   pending_tasks_.erase(key);
 
   // Balance the keepalive in AddPendingTask. Note we don't do this on a
   // failure to load, because the keepalive count is reset in that case.
-  if (host) {
+  if (host && extension->has_lazy_background_page()) {
     ExtensionSystem::Get(profile)->process_manager()->
         DecrementLazyKeepaliveCount(extension);
   }
 }
 
 void LazyBackgroundTaskQueue::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   switch (type) {
     case chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING: {
       // If an on-demand background page finished loading, dispatch queued up
       // events for it.
       ExtensionHost* host =
           content::Details<ExtensionHost>(details).ptr();
       if (host->extension_host_type() ==
               chrome::VIEW_TYPE_EXTENSION_BACKGROUND_PAGE) {
         CHECK(host->did_stop_loading());
         ProcessPendingTasks(host, host->profile(), host->extension());
       }
       break;
     }
     case chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED: {
       Profile* profile = content::Source<Profile>(source).ptr();
       ExtensionHost* host =
            content::Details<ExtensionHost>(details).ptr();
       if (host->extension_host_type() ==
               chrome::VIEW_TYPE_EXTENSION_BACKGROUND_PAGE) {
         PendingTasksKey key(profile,  host->extension()->id());
-        if (pending_page_loads_.count(key) > 0) {
+        if (pending_page_loads_.count(key) > 0 &&
+            host->extension()->has_lazy_background_page()) {
           // We were waiting for the background page to unload. We can start it
           // up again and dispatch any queued events.
           MessageLoop::current()->PostTask(FROM_HERE, base::Bind(
               &LazyBackgroundTaskQueue::StartLazyBackgroundPage,
               AsWeakPtr(), profile, host->extension()->id()));
         } else {
           // This may be a load failure (e.g. a crash). In that case, notify
           // consumers about the load failure. This is not strictly necessary,
           // since we also unload the extension in that case (which dispatches
           // the tasks below), but is a good extra precaution.
@@ skipping 14 matching lines @@
       }
       break;
     }
     default:
       NOTREACHED();
       break;
   }
 }
 
 }  // namespace extensions