Update AutoImport to import nothing by default (in absence of policy and master_prefs).

chrome/installer/util/master_preferences.h

Index: chrome/installer/util/master_preferences.h
diff --git a/chrome/installer/util/master_preferences.h b/chrome/installer/util/master_preferences.h
index 9807d9f73fca996e35ad95796083c2c06c84f60f..b0c2d04767a137aa419e9a4dadb598f1a58178af 100644
--- a/chrome/installer/util/master_preferences.h
+++ b/chrome/installer/util/master_preferences.h
@@ -38,11 +38,7 @@ const char kDefaultMasterPrefs[] = "master_preferences";
 // {
 //   "distribution": {
 //      "create_all_shortcuts": true,
-//      "import_bookmarks": false,
 //      "import_bookmarks_from_file": "c:\\path",
-//      "import_history": false,
-//      "import_home_page": false,
-//      "import_search_engine": true,
 //      "show_welcome_page": true,
 //      "skip_first_run_ui": true,
 //      "do_not_launch_chrome": false,
@@ -64,7 +60,13 @@ const char kDefaultMasterPrefs[] = "master_preferences";
 //      "https://igoogle.com"
 //   ],
 //   "homepage": "http://example.org",
-//   "homepage_is_newtabpage": false
+//   "homepage_is_newtabpage": false,
+//   "import_autofill_form_data": false,
+//   "import_bookmarks": false,
+//   "import_history": false,
+//   "import_home_page": false,
+//   "import_saved_passwords": false,
+//   "import_search_engine": false
 // }
 //
 // A reserved "distribution" entry in the file is used to group related