Do not load extension system in the Profile import process.

chrome/common/chrome_switches.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/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 689 matching lines @@
 
 // The file descriptor limit is set to the value of this switch, subject to the
 // OS hard limits. Useful for testing that file descriptor exhaustion is
 // handled gracefully.
 const char kFileDescriptorLimit[]           = "file-descriptor-limit";
 
 // Displays the First Run experience when the browser is started, regardless of
 // whether or not it's actually the first run.
 const char kFirstRun[]                      = "first-run";
 
+// Force a profile auto-import that would occur on a first run.
+const char kFirstRunForceImport[]           = "first-run-force-import";
+
 // Enables using GAIA information to populate profile name and icon.
 const char kGaiaProfileInfo[]               = "gaia-profile-info";
 
 // Specifies an alternate URL to use for retrieving the search domain for
 // Google. Useful for testing.
 const char kGoogleSearchDomainCheckURL[] = "google-search-domain-check-url";
 
 // Specifies a custom name for the GSSAPI library to load.
 const char kGSSAPILibraryName[]             = "gssapi-library-name";
 
@@ skipping 913 matching lines @@
 #elif defined(OS_WIN)
   return CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableChromeStyleDialogs);
 #else
   return CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableChromeStyleDialogs);
 #endif
 }
 
 }  // namespace chrome