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

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index e5d0da76330ff5e30f18f2e927d39a7c47222f38..fe686431d29c0f5b8b21b3a7347098b0498f07b1 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -1681,23 +1681,7 @@ int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
   // preferences are registered, since some of the code that the importer
   // touches reads preferences.
   if (first_run::IsChromeFirstRun()) {
-    // By default Auto Import is performed on first run.
-    bool auto_import = true;
-
-#if defined(OS_WIN)
-    // Auto Import might be disabled via a field trial.  However, this field
-    // trial is not intended to affect enterprise users.
-    auto_import =
-        base::win::IsEnterpriseManaged() ||
-        !base::FeatureList::IsEnabled(features::kDisableFirstRunAutoImportWin);
-#endif  // defined(OS_WIN)
-
-    if (auto_import) {
-      first_run::AutoImport(profile_, master_prefs_->homepage_defined,
-                            master_prefs_->do_import_items,
-                            master_prefs_->dont_import_items,
-                            master_prefs_->import_bookmarks_path);
-    }
+    first_run::AutoImport(profile_, master_prefs_->import_bookmarks_path);
 
     // Note: this can pop the first run consent dialog on linux.
     first_run::DoPostImportTasks(profile_,