Disable AutoImport: experiment and histogram for analysis.

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 adc1045e14c3a1dbb54927da2a17b6d4026c00a1..efc2b53dab675858964d9bc35645cfbfab433a3a 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -206,6 +206,7 @@
 
 #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"
@@ -1813,11 +1814,23 @@ int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
   // 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.