Don't save last used locations in open and save dialogs when in incognito mode.

chrome/common/pref_names.cc

 // Copyright (c) 2010 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/pref_names.h"
 
 namespace prefs {
 
 // *************** PROFILE PREFS ***************
 // These are attached to the user profile
@@ skipping 634 matching lines @@
 // String which specifies where to download files to by default.
 const wchar_t kDownloadDefaultDirectory[] = L"download.default_directory";
 
 // Boolean that records if the download directory was changed by an
 // upgrade a unsafe location to a safe location.
 const wchar_t kDownloadDirUpgraded[] = L"download.directory_upgrade";
 
 // String which specifies where to save html files to by default.
 const wchar_t kSaveFileDefaultDirectory[] = L"savefile.default_directory";
 
+// String which specifies the last directory that was chosen for uploading
+// or opening a file.
+extern const wchar_t kSelectFileLastDirectory[] = L"selectfile.last_directory";
+
 // Extensions which should be opened upon completion.
 const wchar_t kDownloadExtensionsToOpen[] = L"download.extensions_to_open";
 
 // Integer which specifies the frequency in milliseconds for detecting whether
 // plugin windows are hung.
 const wchar_t kHungPluginDetectFrequency[] =
     L"browser.hung_plugin_detect_freq";
 
 // Integer which specifies the timeout value to be used for SendMessageTimeout
 // to detect a hung plugin window.
@@ skipping 182 matching lines @@
 const wchar_t kCloudPrintProxyId[] = L"cloud_print.proxy_id";
 // The GAIA auth token for Cloud Print
 const wchar_t kCloudPrintAuthToken[] = L"cloud_print.auth_token";
 // The GAIA auth token used by Cloud Print to authenticate with the XMPP server
 // This should eventually go away because the above token should work for both.
 const wchar_t kCloudPrintXMPPAuthToken[] = L"cloud_print.xmpp_auth_token";
 // The email address of the account used to authenticate with the Cloud Print
 // server.
 extern const wchar_t kCloudPrintEmail[] = L"cloud_print.email";
 }  // namespace prefs