startup: Put it in chrome namespace.

chrome/browser/first_run/first_run_win.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 <shlobj.h>
 #include <windows.h>
 
 #include "base/environment.h"
@@ skipping 532 matching lines @@
   scoped_refptr<ImporterHost> importer_host;
   importer_host = new ImporterHost;
 
   internal::AutoImportPlatformCommon(importer_host, profile, homepage_defined,
                                      import_items, dont_import_items,
                                      make_chrome_default);
 
   process_singleton->Unlock();
   CreateSentinel();
 #endif  // !defined(USE_AURA)
-  browser::ShowFirstRunDefaultBrowserPrompt(profile);
+  chrome::ShowFirstRunDefaultBrowserPrompt(profile);
 }
 
 int ImportNow(Profile* profile, const CommandLine& cmdline) {
   int return_code = internal::ImportBookmarkFromFileIfNeeded(profile, cmdline);
 #if !defined(USE_AURA)
   if (cmdline.HasSwitch(switches::kImport)) {
     return_code = ImportFromBrowser(profile, cmdline);
   }
 #endif
   return return_code;
@@ skipping 40 matching lines @@
     return false;
 
   internal::SetShowWelcomePagePrefIfNeeded(install_prefs.get());
   internal::SetImportPreferencesAndLaunchImport(out_prefs, install_prefs.get());
   internal::SetDefaultBrowser(install_prefs.get());
 
   return false;
 }
 
 }  // namespace first_run