Elevated install of recovery component (component update part)

chrome/browser/component_updater/pnacl/pnacl_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/pnacl/pnacl_component_installer.h"
 
 #include <string>
 #include <vector>
 
 #include "base/atomicops.h"
@@ skipping 247 matching lines @@
 
   // Installation is done. Now tell the rest of chrome.
   // - The path service.
   // - Callbacks that requested an update.
   set_current_version(version);
   CheckVersionCompatiblity(version);
   OverrideDirPnaclComponent(path);
   return true;
 }
 
+base::FilePath PnaclComponentInstaller::GetBackupPath() const {
+  return base::FilePath();
+}
+
+void PnaclComponentInstaller::InstallExternally() {
+}
+
 // Given |file|, which can be a path like "_platform_specific/arm/pnacl_foo",
 // returns the assumed install path. The path separator in |file| is '/'
 // for all platforms. Caller is responsible for checking that the
 // |installed_file| actually exists.
 bool PnaclComponentInstaller::GetInstalledFile(const std::string& file,
                                                base::FilePath* installed_file) {
   if (current_version().Equals(Version(kNullVersion)))
     return false;
 
   *installed_file = GetPnaclBaseDirectory()
@@ skipping 105 matching lines @@
 }  // namespace component_updater
 
 namespace pnacl {
 
 bool NeedsOnDemandUpdate() {
   return base::subtle::NoBarrier_Load(
              &component_updater::needs_on_demand_update) != 0;
 }
 
 }  // namespace pnacl