Refactor install.cc into the work item parts and the non-work item parts.

chrome/installer/util/installer_state.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_INSTALLER_UTIL_INSTALLER_STATE_H_
 #define CHROME_INSTALLER_UTIL_INSTALLER_STATE_H_
 #pragma once
 
 #include <string>
 
@@ skipping 20 matching lines @@
 
   // Initializes |this| based on the current operation.
   void Initialize(const MasterPreferences& prefs,
                   const InstallationState& machine_state);
 
   // true if system-level, false if user-level.
   bool system_install() const { return system_install_; }
 
   Operation operation() const { return operation_; }
 
-  BrowserDistribution::Type GetInstallOperand() const {
-    return install_operand_;
-  }
-
   // The ClientState key by which we interact with Google Update.
   const std::wstring& state_key() const { return state_key_; }
 
- private:
+ protected:
   bool IsMultiInstallUpdate(const MasterPreferences& prefs,
                             const InstallationState& machine_state);
 
   Operation operation_;
-  BrowserDistribution::Type install_operand_;
   std::wstring state_key_;
   bool system_install_;
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(InstallerState);
 };  // class InstallerState
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_UTIL_INSTALLER_STATE_H_