Revert 273763 "Add garbage collection for shared extensions on C..."

trunk/src/chrome/browser/extensions/extension_garbage_collector_chromeos.cc

-// Copyright 2014 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_garbage_collector_chromeos.h"
-
-#include "chrome/browser/chromeos/login/users/user_manager.h"
-#include "chrome/browser/extensions/extension_assets_manager_chromeos.h"
-#include "chrome/browser/extensions/extension_service.h"
-#include "extensions/browser/extension_system.h"
-
-namespace extensions {
-
-bool ExtensionGarbageCollectorChromeOS::shared_extensions_garbage_collected =
-    false;
-
-ExtensionGarbageCollectorChromeOS::ExtensionGarbageCollectorChromeOS(
-    content::BrowserContext* context)
-    : ExtensionGarbageCollector(context),
-      disable_garbage_collection_(false) {
-}
-
-ExtensionGarbageCollectorChromeOS::~ExtensionGarbageCollectorChromeOS() {}
-
-// static
-ExtensionGarbageCollectorChromeOS* ExtensionGarbageCollectorChromeOS::Get(
-    content::BrowserContext* context) {
-  return static_cast<ExtensionGarbageCollectorChromeOS*>(
-      ExtensionGarbageCollector::Get(context));
-}
-
-void ExtensionGarbageCollectorChromeOS::GarbageCollectExtensions() {
-  if (disable_garbage_collection_)
-    return;
-
-  // Process per-profile extensions dir.
-  ExtensionGarbageCollector::GarbageCollectExtensions();
-
-  if (!shared_extensions_garbage_collected &&
-      CanGarbageCollectSharedExtensions()) {
-    GarbageCollectSharedExtensions();
-    shared_extensions_garbage_collected = true;
-  }
-}
-
-bool ExtensionGarbageCollectorChromeOS::CanGarbageCollectSharedExtensions() {
-  chromeos::UserManager* user_manager = chromeos::UserManager::Get();
-  if (!user_manager) {
-    NOTREACHED();
-    return false;
-  }
-
-  const chromeos::UserList& active_users = user_manager->GetLoggedInUsers();
-  for (size_t i = 0; i < active_users.size(); i++) {
-    Profile* profile = user_manager->GetProfileByUser(active_users[i]);
-    ExtensionGarbageCollectorChromeOS* gc =
-        ExtensionGarbageCollectorChromeOS::Get(profile);
-    if (gc->crx_installs_in_progress_ > 0)
-      return false;
-  }
-
-  return true;
-}
-
-void ExtensionGarbageCollectorChromeOS::GarbageCollectSharedExtensions() {
-  std::multimap<std::string, base::FilePath> paths;
-  if (ExtensionAssetsManagerChromeOS::CleanUpSharedExtensions(&paths)) {
-    ExtensionService* service =
-        ExtensionSystem::Get(context_)->extension_service();
-    if (!service->GetFileTaskRunner()->PostTask(
-            FROM_HERE,
-            base::Bind(&GarbageCollectExtensionsOnFileThread,
-                       ExtensionAssetsManagerChromeOS::GetSharedInstallDir(),
-                       paths))) {
-      NOTREACHED();
-    }
-  }
-}
-
-}  // namespace extensions