Refactoring; switch the |filter| parameter into something that is more amenab...

chrome/browser/browser.cc

 // Copyright (c) 2006-2009 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/browser.h"
 
 #include "base/command_line.h"
 #include "base/idle_timer.h"
 #include "base/logging.h"
 #include "base/string_util.h"
@@ skipping 975 matching lines @@
 #if defined(OS_WIN) || defined(OS_LINUX)
 void Browser::OpenFile() {
   UserMetrics::RecordAction(L"OpenFile", profile_);
   if (!select_file_dialog_.get())
     select_file_dialog_ = SelectFileDialog::Create(this);
 
   // TODO(beng): figure out how to juggle this.
   gfx::NativeWindow parent_window = window_->GetNativeHandle();
   select_file_dialog_->SelectFile(SelectFileDialog::SELECT_OPEN_FILE,
                                   string16(), FilePath(),
-                                  std::wstring(), 0, FILE_PATH_LITERAL(""),
+                                  NULL, 0, FILE_PATH_LITERAL(""),
                                   parent_window, NULL);
 }
 #endif
 
 #if defined(OS_WIN)
 void Browser::OpenCreateShortcutsDialog() {
   UserMetrics::RecordAction(L"CreateShortcut", profile_);
   GetSelectedTabContents()->AsWebContents()->CreateShortcut();
 }
 
@@ skipping 1636 matching lines @@
 
   // We need to register the window position pref.
   std::wstring window_pref(prefs::kBrowserWindowPlacement);
   window_pref.append(L"_");
   window_pref.append(app_name);
   PrefService* prefs = g_browser_process->local_state();
   DCHECK(prefs);
 
   prefs->RegisterDictionaryPref(window_pref.c_str());
 }