Return a new error code for multi-install updates if Group Policy settings blocking...

chrome/installer/util/google_update_settings.h

 // Copyright (c) 2011 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_GOOGLE_UPDATE_SETTINGS_H_
 #define CHROME_INSTALLER_UTIL_GOOGLE_UPDATE_SETTINGS_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "chrome/installer/util/util_constants.h"
 
 namespace installer {
 class ChannelInfo;
 class InstallerState;
 }
 
 // This class provides accessors to the Google Update 'ClientState' information
 // that recorded when the user downloads the chrome installer. It is
 // google_update.exe responsability to write the initial values.
 class GoogleUpdateSettings {
  public:
+  // Update policy constants defined by Google Update; do not change these.
+  enum UpdatePolicy {
+    UPDATES_DISABLED    = 0,
+    AUTOMATIC_UPDATES   = 1,
+    MANUAL_UPDATES_ONLY = 2,
+  };
+
   // Returns whether the user has given consent to collect UMA data and send
   // crash dumps to Google. This information is collected by the web server
   // used to download the chrome installer.
   static bool GetCollectStatsConsent();
 
   // Sets the user consent to send UMA and crash dumps to Google. Returns
   // false if the setting could not be recorded.
   static bool SetCollectStatsConsent(bool consented);
 
   // Returns the metrics id set in the registry (that can be used in crash
@@ skipping 119 matching lines @@
                                                const std::wstring& value);
 
   // True if a build is strictly organic, according to its brand code.
   static bool IsOrganic(const std::wstring& brand);
 
   // True if a build should run as organic in the first run process. This uses
   // a slightly different set of brand codes from the standard IsOrganic
   // method.
   static bool IsOrganicFirstRun(const std::wstring& brand);
 
+  // Returns the effective update policy for |app_guid| as dictated by
+  // Group Policy settings.  |is_overridden|, if non-NULL, is populated with
+  // true if an app-specific policy override is in force, or false otherwise.
+  static UpdatePolicy GetAppUpdatePolicy(const std::wstring& app_guid,
+                                         bool* is_overridden);
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(GoogleUpdateSettings);
 };
 
 #endif  // CHROME_INSTALLER_UTIL_GOOGLE_UPDATE_SETTINGS_H_