Implement 'Do Not Track' header

chrome/common/pref_names.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/common/pref_names.h"
 
 #include "base/basictypes.h"
 
 namespace prefs {
 
@@ skipping 983 matching lines @@
 
 // Preference to disable 3D APIs (WebGL, Pepper 3D).
 const char kDisable3DAPIs[] = "disable_3d_apis";
 
 // Whether to enable hyperlink auditing ("<a ping>").
 const char kEnableHyperlinkAuditing[] = "enable_a_ping";
 
 // Whether to enable sending referrers.
 const char kEnableReferrers[] = "enable_referrers";
 
+// Whether to send the DNT header.
+const char kEnableDoNotTrack[] = "enable_do_not_track";
+
 // Boolean to enable reporting memory info to page.
 const char kEnableMemoryInfo[] = "enable_memory_info";
 
 // Boolean that specifies whether to import bookmarks from the default browser
 // on first run.
 const char kImportBookmarks[] = "import_bookmarks";
 
 // Boolean that specifies whether to import the browsing history from the
 // default browser on first run.
 const char kImportHistory[] = "import_history";
@@ skipping 1003 matching lines @@
 
 // Counts how many more times the 'profile on a network share' warning should be
 // shown to the user before the next silence period.
 const char kNetworkProfileWarningsLeft[] = "network_profile.warnings_left";
 // Tracks the time of the last shown warning. Used to reset
 // |network_profile.warnings_left| after a silence period.
 const char kNetworkProfileLastWarningTime[] =
     "network_profile.last_warning_time";
 
 }  // namespace prefs