Unremoving the timeStamp property from webNavigation and webRequest extension APIs.

* Reverts r79631: "Remove the timeStamp property from the
  webNavigation extension API."

* Reverts r79314: "Remove the timeStamp property from
  webRequest extension events."

* Adds the `timeStamp` property to WebRequest's
  `onBeforeSendHeaders` event.

* Updates documentation to note that the timestamps are only
  _internally_  consistent. Comparing timestamps to the
  extension's clock might result in Unexpected Events From
  The Future™.

BUG=60101
TEST=browser_tests

Review URL: http://codereview.chromium.org/6812047
Patch from Mike West <mkwst@chromium.org>.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@81076 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 1 deletions

diff --git a/chrome/browser/extensions/extension_webrequest_api_constants.cc b/chrome/browser/extensions/extension_webrequest_api_constants.cc
index 460e21f..32a6f4c 100644
--- a/chrome/browser/extensions/extension_webrequest_api_constants.cc
+++ b/chrome/browser/extensions/extension_webrequest_api_constants.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -13,6 +13,7 @@ const char kRedirectUrlKey[] = "redirectUrl";
 const char kRequestIdKey[] = "requestId";
 const char kStatusCodeKey[] = "statusCode";
 const char kTabIdKey[] = "tabId";
+const char kTimeStampKey[] = "timeStamp";
 const char kTypeKey[] = "type";
 const char kUrlKey[] = "url";