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

chrome/common/chrome_features.cc

 // Copyright 2016 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/common/chrome_features.h"
 
 #include "extensions/features/features.h"
 #include "ppapi/features/features.h"
 
 namespace features {
@@ skipping 70 matching lines @@
 // search engine's search page consistent.
 const base::Feature kConsistentOmniboxGeolocation{
     "ConsistentOmniboxGeolocation", base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
 #if defined(OS_WIN)
 // Enables or disables desktop ios promotion, which shows a promotion to the
 // user promoting Chrome for iOS.
 const base::Feature kDesktopIOSPromotion{"DesktopIOSPromotion",
                                          base::FEATURE_DISABLED_BY_DEFAULT};
-
-// Disables the AutoImport feature on first run. See crbug.com/555550
-const base::Feature kDisableFirstRunAutoImportWin{
-    "DisableFirstRunAutoImport", base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
 // Experiment to display a toggle allowing users to opt-out of persisting a
 // Grant or Deny decision in a permission prompt.
 const base::Feature kDisplayPersistenceToggleInPermissionPrompts{
     "DisplayPersistenceToggleInPermissionPrompts",
     base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables Expect CT reporting, which sends reports for opted-in sites
 // that don't serve sufficient Certificate Transparency information.
@@ skipping 191 matching lines @@
 // Enables or disables emoji, handwriting and voice input on opt-in IME menu.
 const base::Feature kEHVInputOnImeMenu{"EmojiHandwritingVoiceInput",
                                        base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enables or disables flash component updates on Chrome OS.
 const base::Feature kCrosCompUpdates{"CrosCompUpdates",
                                      base::FEATURE_ENABLED_BY_DEFAULT};
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace features