Do not load extension system in the Profile import process.

chrome/browser/first_run/first_run.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/first_run/first_run.h"
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
@@ skipping 543 matching lines @@
     local_state->SetBoolean(prefs::kAutofillPersonalDataManagerFirstRun, true);
   }
   return true;
 }
 
 void LogFirstRunMetric(FirstRunBubbleMetric metric) {
   UMA_HISTOGRAM_ENUMERATION("FirstRun.SearchEngineBubble", metric,
                             NUM_FIRST_RUN_BUBBLE_METRICS);
 }
 
+namespace {
+CommandLine* GetExtraArgumentsInstance() {
+  CR_DEFINE_STATIC_LOCAL(CommandLine, arguments, (CommandLine::NoProgram()));
+  return &arguments;
+}
+}  // namespace
+
+void SetExtraArgumentsForImportProcess(const CommandLine& arguments) {
+  GetExtraArgumentsInstance()->AppendArguments(arguments, false);
+}
+
+const CommandLine& GetExtraArgumentsForImportProcess() {
+  return *GetExtraArgumentsInstance();
+}
+
 // static
 void FirstRunBubbleLauncher::ShowFirstRunBubbleSoon() {
   SetShowFirstRunBubblePref(true);
   // This FirstRunBubbleLauncher instance will manage its own lifetime.
   new FirstRunBubbleLauncher();
 }
 
 FirstRunBubbleLauncher::FirstRunBubbleLauncher() {
   registrar_.Add(this, content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
                  content::NotificationService::AllSources());
@@ skipping 109 matching lines @@
     return SKIP_FIRST_RUN;
 
   internal::SetShowWelcomePagePrefIfNeeded(install_prefs.get());
   internal::SetImportPreferencesAndLaunchImport(out_prefs, install_prefs.get());
   internal::SetDefaultBrowser(install_prefs.get());
 
   return SKIP_FIRST_RUN;
 }
 
 }  // namespace first_run