Cleaning Up Extensions When Local Content Removed

chrome/browser/extensions/extension_service.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/extension_service.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 101 matching lines @@
 #include "webkit/database/database_tracker.h"
 #include "webkit/database/database_util.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/extensions/bluetooth_event_router.h"
 #include "chrome/browser/chromeos/extensions/file_browser_event_router.h"
 #include "chrome/browser/chromeos/extensions/input_method_event_router.h"
 #include "chrome/browser/chromeos/extensions/media_player_event_router.h"
 #include "chrome/browser/chromeos/input_method/input_method_manager.h"
-#include "chrome/browser/extensions/extension_input_ime_api.h"
 #include "webkit/fileapi/file_system_context.h"
 #include "webkit/fileapi/file_system_mount_point_provider.h"
 #endif
 
 using base::Time;
 using content::BrowserContext;
 using content::BrowserThread;
 using content::DevToolsAgentHost;
 using content::DevToolsAgentHostRegistry;
 using content::PluginService;
@@ skipping 185 matching lines @@
 
 ExtensionService::ExtensionService(Profile* profile,
                                    const CommandLine* command_line,
                                    const FilePath& install_directory,
                                    ExtensionPrefs* extension_prefs,
                                    bool autoupdate_enabled,
                                    bool extensions_enabled)
     : profile_(profile),
       system_(ExtensionSystem::Get(profile)),
       extension_prefs_(extension_prefs),
+      extension_garbage_collector_(
+          new extensions::ExtensionGarbageCollector(this)),
       settings_frontend_(extensions::SettingsFrontend::Create(profile)),
       pending_extension_manager_(*ALLOW_THIS_IN_INITIALIZER_LIST(this)),
       install_directory_(install_directory),
       extensions_enabled_(extensions_enabled),
       show_extensions_prompts_(true),
       ready_(false),
       toolbar_model_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
       menu_manager_(profile),
       app_notification_manager_(new AppNotificationManager(profile)),
       apps_promo_(profile->GetPrefs()),
@@ skipping 1458 matching lines @@
   // Keep information about the extension so that we can reload it later
   // even if it's not permanently installed.
   unloaded_extension_paths_[extension->id()] = extension->path();
 
   // Clean up if the extension is meant to be enabled after a reload.
   disabled_extension_paths_.erase(extension->id());
 
   // Clean up runtime data.
   extension_runtime_data_.erase(extension_id);
 
-if (disabled_extensions_.Contains(extension->id())) {
+  if (disabled_extensions_.Contains(extension->id())) {
     UnloadedExtensionInfo details(extension, reason);
     details.already_disabled = true;
     disabled_extensions_.Remove(extension->id());
     content::NotificationService::current()->Notify(
         chrome::NOTIFICATION_EXTENSION_UNLOADED,
         content::Source<Profile>(profile_),
         content::Details<UnloadedExtensionInfo>(&details));
     // Make sure the profile cleans up its RequestContexts when an already
     // disabled extension is unloaded (since they are also tracking the disabled
     // extensions).
@@ skipping 21 matching lines @@
   // or uninstalled, and UnloadAll is just part of shutdown.
 }
 
 void ExtensionService::ReloadExtensions() {
   UnloadAllExtensions();
   component_loader_->LoadAll();
   extensions::InstalledLoader(this).LoadAllExtensions();
 }
 
 void ExtensionService::GarbageCollectExtensions() {
-  if (extension_prefs_->pref_service()->ReadOnly())
-    return;
-
-  scoped_ptr<ExtensionPrefs::ExtensionsInfo> info(
-      extension_prefs_->GetInstalledExtensionsInfo());
-
-  std::map<std::string, FilePath> extension_paths;
-  for (size_t i = 0; i < info->size(); ++i)
-    extension_paths[info->at(i)->extension_id] = info->at(i)->extension_path;
-
-  if (!BrowserThread::PostTask(
-          BrowserThread::FILE, FROM_HERE,
-          base::Bind(
-              &extension_file_util::GarbageCollectExtensions,
-              install_directory_,
-              extension_paths)))
-    NOTREACHED();
+  extension_garbage_collector_->GarbageCollectExtensions();
 
   // Also garbage-collect themes.  We check |profile_| to be
   // defensive; in the future, we may call GarbageCollectExtensions()
   // from somewhere other than Init() (e.g., in a timer).
   if (profile_) {
     ThemeServiceFactory::GetForProfile(profile_)->RemoveUnusedThemes();
   }
 }
 
 void ExtensionService::SyncExtensionChangeIfNeeded(const Extension& extension) {
@@ skipping 145 matching lines @@
     // to a version that requires additional privileges.
     is_privilege_increase =
         granted_permissions->HasLessPrivilegesThan(
             extension->GetActivePermissions());
   }
 
   if (is_extension_upgrade) {
     // Other than for unpacked extensions, CrxInstaller should have guaranteed
     // that we aren't downgrading.
     if (extension->location() != Extension::LOAD)
-      CHECK(extension->version()->CompareTo(*(old->version())) >= 0);
+      CHECK_GE(extension->version()->CompareTo(*(old->version())), 0);
 
     // Extensions get upgraded if the privileges are allowed to increase or
     // the privileges haven't increased.
     if (!is_privilege_increase) {
       SetBeingUpgraded(old, true);
       SetBeingUpgraded(extension, true);
     }
 
     // If the extension was already disabled, suppress any alerts for becoming
     // disabled on permissions increase.
@@ skipping 509 matching lines @@
 
   // To coexist with certain unit tests that don't have a work-thread message
   // loop available at ExtensionService shutdown, we lazy-initialize this
   // object so that those cases neither create nor destroy an
   // APIResourceController.
   if (!api_resource_controller_.get()) {
     api_resource_controller_.reset(new extensions::APIResourceController());
   }
   return api_resource_controller_.get();
 }