Make ComponentInstaller refcounted.

chrome/browser/component_updater/recovery_component_installer.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/component_updater/recovery_component_installer.h"
 
 #include <stdint.h>
 #include <string>
 
 #include "base/base_paths.h"
@@ skipping 158 matching lines @@
 // mechanism.
 // For user Chrome, recovery component just installs silently. For machine
 // Chrome, elevation may be needed. If that happens, the installer will set
 // preference flag prefs::kRecoveryComponentNeedsElevation to request that.
 // There is a global error service monitors this flag and will pop up
 // bubble if the flag is set to true.
 // See chrome/browser/recovery/recovery_install_global_error.cc for details.
 class RecoveryComponentInstaller : public update_client::ComponentInstaller {
  public:
   RecoveryComponentInstaller(const Version& version, PrefService* prefs);
-  ~RecoveryComponentInstaller() override {}
 
+  // ComponentInstaller implementation:
   void OnUpdateError(int error) override;
 
   bool Install(const base::DictionaryValue& manifest,
                const base::FilePath& unpack_path) override;
 
   bool GetInstalledFile(const std::string& file,
                         base::FilePath* installed_file) override;
 
  private:
+  ~RecoveryComponentInstaller() override {}
+
   bool RunInstallCommand(const base::CommandLine& cmdline,
                          const base::FilePath& installer_folder) const;
 
   Version current_version_;
   PrefService* prefs_;
 };
 
 void SimulateElevatedRecoveryHelper(PrefService* prefs) {
   prefs->SetBoolean(prefs::kRecoveryComponentNeedsElevation, true);
 }
@@ skipping 194 matching lines @@
 #endif  // OS_WIN
   prefs->SetBoolean(prefs::kRecoveryComponentNeedsElevation, false);
 }
 
 void DeclinedElevatedRecoveryInstall(PrefService* prefs) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   prefs->SetBoolean(prefs::kRecoveryComponentNeedsElevation, false);
 }
 
 }  // namespace component_updater