Add back pipelining after M17 branch point.

chrome/browser/about_flags.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 "chrome/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 354 matching lines @@
     kOsMac | kOsWin | kOsLinux,
     SINGLE_VALUE_TYPE(switches::kEnableAutologin)
   },
   {
     "use-more-webui",
     IDS_FLAGS_USE_MORE_WEBUI_NAME,
     IDS_FLAGS_USE_MORE_WEBUI_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kUseMoreWebUI)
   },
+  {
+    "enable-http-pipelining",
+    IDS_FLAGS_ENABLE_HTTP_PIPELINING_NAME,
+    IDS_FLAGS_ENABLE_HTTP_PIPELINING_DESCRIPTION,
+    kOsAll,
+    SINGLE_VALUE_TYPE(switches::kEnableHttpPipelining)
+  },
   // TODO(flackr): Remove this flag and views screen locker when the WebUI
   // locker is mature (crbug.com/105263).
   {
     "disable-webui-lock-screen",
     IDS_FLAGS_WEBUI_LOCK_NAME,
     IDS_FLAGS_WEBUI_LOCK_DESCRIPTION,
     kOsCrOS,
 #if defined(OS_CHROMEOS)
     SINGLE_VALUE_TYPE(switches::kDisableWebUILockScreen)
 #else
@@ skipping 466 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags