Disable AutoImport: experiment and histogram for analysis.

chrome/browser/chrome_browser_main.cc

 // Copyright (c) 2012 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/browser/chrome_browser_main.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 188 matching lines @@
 #include "chromeos/settings/cros_settings_names.h"
 #endif  // defined(OS_CHROMEOS)
 
 // TODO(port): several win-only methods have been pulled out of this, but
 // BrowserMain() as a whole needs to be broken apart so that it's usable by
 // other platforms. For now, it's just a stub. This is a serious work in
 // progress and should not be taken as an indication of a real refactoring.
 
 #if defined(OS_WIN)
 #include "base/trace_event/trace_event_etw_export_win.h"
+#include "base/win/win_util.h"
 #include "base/win/windows_version.h"
 #include "chrome/app/file_pre_reader_win.h"
 #include "chrome/browser/chrome_browser_main_win.h"
 #include "chrome/browser/component_updater/sw_reporter_installer_win.h"
 #include "chrome/browser/downgrade/user_data_downgrade.h"
 #include "chrome/browser/first_run/try_chrome_dialog_view.h"
 #include "chrome/browser/first_run/upgrade_util_win.h"
 #include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
 #include "chrome/browser/ui/network_profile_bubble.h"
 #include "chrome/browser/win/browser_util.h"
@@ skipping 1587 matching lines @@
   // (requires supporting early exit).
   PostProfileInit();
 
 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
   // Show the First Run UI if this is the first time Chrome has been run on
   // this computer, or we're being compelled to do so by a command line flag.
   // Note that this be done _after_ the PrefService is initialized and all
   // preferences are registered, since some of the code that the importer
   // touches reads preferences.
   if (first_run::IsChromeFirstRun()) {
-    first_run::AutoImport(profile_,
-                          master_prefs_->homepage_defined,
-                          master_prefs_->do_import_items,
-                          master_prefs_->dont_import_items,
-                          master_prefs_->import_bookmarks_path);
+    // 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::IsEnrolledToDomain() ||
+        !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);
+    }
 
     // Note: this can pop the first run consent dialog on linux.
     first_run::DoPostImportTasks(profile_,

[sky, 2016/08/29 16:08:56]

Did you investigate what this does to ensure we want to run it in the
!auto_import case?

[gcomanici, 2016/08/30 18:30:30]

This is a very good point. The remaining lines are dealing with the following
issues:

1. Should Chrome be the default browser?
2. Show Welcome Page?
3. In Windows: notifies PDM that this is the first run.
4. Other Platform specific tasks unrelated to Auto Import.

None of these are affected by Auto Import.

                                  master_prefs_->make_chrome_default_for_user);
 
     if (!master_prefs_->suppress_first_run_default_browser_prompt) {
       browser_creator_->set_show_main_browser_window(
           !chrome::ShowFirstRunDefaultBrowserPrompt(profile_));
     } else {
       browser_creator_->set_is_default_browser_dialog_suppressed(true);
     }
   }
 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
@@ skipping 390 matching lines @@
   chromeos::CrosSettings::Shutdown();
 #endif  // defined(OS_CHROMEOS)
 #endif  // defined(OS_ANDROID)
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }