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

chrome/test/testing_profile.h

 // 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.
 
 #ifndef CHROME_TEST_TESTING_PROFILE_H_
 #define CHROME_TEST_TESTING_PROFILE_H_
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 243 matching lines @@
     return webkit_context_;
   }
   virtual WebKitContext* GetOffTheRecordWebKitContext() { return NULL; }
   virtual void MarkAsCleanShutdown() {}
   virtual void InitExtensions() {}
   virtual void InitWebResources() {}
   virtual NTPResourceCache* GetNTPResourceCache();
   virtual DesktopNotificationService* GetDesktopNotificationService() {
     return NULL;
   }
+  virtual FilePath last_selected_directory() {
+    return last_selected_directory_;
+  }
+  virtual void set_last_selected_directory(const FilePath& path) {
+    last_selected_directory_ = path;
+  }
+
 
   // Schedules a task on the history backend and runs a nested loop until the
   // task is processed.  This has the effect of blocking the caller until the
   // history service processes all pending requests.
   void BlockUntilHistoryProcessesPendingRequests();
 
   // Creates and initializes a profile sync service if the tests require one.
   virtual ProfileSyncService* GetProfileSyncService();
   virtual CloudPrintProxyService* GetCloudPrintProxyService() { return NULL; }
 
@@ skipping 70 matching lines @@
   // WebKitContext, lazily initialized by GetWebKitContext().
   scoped_refptr<WebKitContext> webkit_context_;
 
   scoped_refptr<HostContentSettingsMap> host_content_settings_map_;
   scoped_refptr<GeolocationContentSettingsMap>
       geolocation_content_settings_map_;
   scoped_refptr<GeolocationPermissionContext> geolocation_permission_context_;
 
   // Find bar state.  Created lazily by GetFindBarState().
   scoped_ptr<FindBarState> find_bar_state_;
+
+  FilePath last_selected_directory_;
 };
 
 // A profile that derives from another profile.  This does not actually
 // override anything except the GetRuntimeId() in order to test sharing of
 // site information.
 class DerivedTestingProfile : public TestingProfile {
  public:
   explicit DerivedTestingProfile(Profile* profile)
       : original_profile_(profile) {}
 
   virtual ProfileId GetRuntimeId() {
     return original_profile_->GetRuntimeId();
   }
 
  protected:
   Profile* original_profile_;
 };
 
 #endif  // CHROME_TEST_TESTING_PROFILE_H_