Implement pref policy for disabling incognito mode.

chrome/browser/tab_contents/render_view_context_menu.cc

 // Copyright (c) 2011 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 <algorithm>
 #include <set>
 
 #include "chrome/browser/tab_contents/render_view_context_menu.h"
 
 #include "base/command_line.h"
@@ skipping 926 matching lines @@
     case IDC_CONTENT_CONTEXT_PASTE:
       return !!(params_.edit_flags & WebContextMenuData::CanPaste);
 
     case IDC_CONTENT_CONTEXT_DELETE:
       return !!(params_.edit_flags & WebContextMenuData::CanDelete);
 
     case IDC_CONTENT_CONTEXT_SELECTALL:
       return !!(params_.edit_flags & WebContextMenuData::CanSelectAll);
 
     case IDC_CONTENT_CONTEXT_OPENLINKOFFTHERECORD:
-      return !profile_->IsOffTheRecord() && params_.link_url.is_valid();
+      return !profile_->IsOffTheRecord() && params_.link_url.is_valid() &&
+             profile_->GetPrefs()->GetBoolean(prefs::kIncognitoEnabled);
 
     case IDC_SPELLCHECK_ADD_TO_DICTIONARY:
       return !params_.misspelled_word.empty();
 
     case IDC_PRINT:
       return params_.media_type == WebContextMenuData::MediaTypeNone ||
         params_.media_flags & WebContextMenuData::MediaCanPrint;
 
     case IDC_CONTENT_CONTEXT_SEARCHWEBFOR:
     case IDC_CONTENT_CONTEXT_GOTOURL:
@@ skipping 519 matching lines @@
       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages),
       g_browser_process->clipboard());
 }
 
 void RenderViewContextMenu::MediaPlayerActionAt(
     const gfx::Point& location,
     const WebMediaPlayerAction& action) {
   source_tab_contents_->render_view_host()->MediaPlayerActionAt(
       location, action);
 }