Add a ping delay time master preference.

chrome/installer/util/master_preferences.h

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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.
 //
 // This file contains functions processing master preference file used by
 // setup and first run.
 
-#ifndef CHROME_INSTALLER_UTIL_MASTER_PREFERENCES_H__
-#define CHROME_INSTALLER_UTIL_MASTER_PREFERENCES_H__
+#ifndef CHROME_INSTALLER_UTIL_MASTER_PREFERENCES_H_
+#define CHROME_INSTALLER_UTIL_MASTER_PREFERENCES_H_
 
 #include <string>
 #include <vector>
 
+#include "base/file_util.h"
+
 namespace installer_util {
 
 // This is the default name for the master preferences file used to pre-set
 // values in the user profile at first run.
 const wchar_t kDefaultMasterPrefs[] = L"master_preferences";
 
 // These are the possible results of calling ParseDistributionPreferences.
 // Some of the results can be combined, so they are bit flags.
 enum MasterPrefResult {
   MASTER_PROFILE_NOT_FOUND                     = 0x1,
@@ skipping 29 matching lines @@
   // Show the EULA and do not install if not accepted.
   MASTER_PROFILE_REQUIRE_EULA                  = 0x1 << 13,
   // Use an alternate description text for some shortcuts.
   MASTER_PROFILE_ALT_SHORTCUT_TXT              = 0x1 << 14,
   // Use a smaller OEM info bubble on first run.
   MASTER_PROFILE_OEM_FIRST_RUN_BUBBLE          = 0x1 << 15,
   // Import home page from the default browser.
   MASTER_PROFILE_IMPORT_HOME_PAGE              = 0x1 << 16
 };
 
+// This function gets ping delay (ping_delay in the sample above) from master
+// preferences.
+bool GetDistributionPingDelay(const FilePath& master_prefs_path,
+                              int& delay);
+
 // The master preferences is a JSON file with the same entries as the
 // 'Default\Preferences' file. This function parses the distribution
 // section of the preferences file.
 //
 // A prototypical 'master_preferences' file looks like this:
 //
 // {
 //   "distribution": {
 //      "skip_first_run_ui": true,
 //      "show_welcome_page": true,
 //      "import_search_engine": true,
 //      "import_history": false,
 //      "import_bookmarks": false,
 //      "import_home_page": false,
 //      "create_all_shortcuts": true,
 //      "do_not_launch_chrome": false,
 //      "make_chrome_default": false,
 //      "make_chrome_default_for_user": true,
 //      "system_level": false,
 //      "verbose_logging": true,
 //      "require_eula": true,
-//      "alternate_shortcut_text": false
+//      "alternate_shortcut_text": false,
+//      "ping_delay": 40
 //   },
 //   "browser": {
 //      "show_home_button": true
 //   },
 //   "bookmark_bar": {
 //      "show_on_all_tabs": true
 //   },
 //   "first_run_tabs": [
 //      "http://gmail.com",
 //      "https://igoogle.com"
@@ skipping 17 matching lines @@
 //       "https://google.com/f2"
 //    ]
 //  }
 //
 // Note that the entries are usually urls but they don't have to.
 //
 // This function retuns the list as a vector of strings. If the master
 // preferences file does not contain such list the vector is empty.
 std::vector<std::wstring> ParseFirstRunTabs(
     const std::wstring& master_prefs_path);
-
 }
 
-#endif  // CHROME_INSTALLER_UTIL_MASTER_PREFERENCES_H__
+#endif  // CHROME_INSTALLER_UTIL_MASTER_PREFERENCES_H_