Remove SPDY 2.1 support.

chrome/browser/about_flags.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/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 430 matching lines @@
     SINGLE_VALUE_TYPE(switches::kEnableHttpPipelining)
   },
   {
     "enable-spdy3",
     IDS_FLAGS_ENABLE_SPDY3_NAME,
     IDS_FLAGS_ENABLE_SPDY3_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kEnableSpdy3)
   },
   {
-    "enable-spdy-flow-control",
-    IDS_FLAGS_ENABLE_SPDY_FLOW_CONTROL_NAME,
-    IDS_FLAGS_ENABLE_SPDY_FLOW_CONTROL_DESCRIPTION,
-    kOsAll,
-    SINGLE_VALUE_TYPE(switches::kEnableSpdyFlowControl)
-  },
-  {
     "enable-async-dns",
     IDS_FLAGS_ENABLE_ASYNC_DNS_NAME,
     IDS_FLAGS_ENABLE_ASYNC_DNS_DESCRIPTION,
     kOsWin | kOsMac | kOsLinux | kOsCrOS,
     SINGLE_VALUE_TYPE(switches::kEnableAsyncDns)
   },
   {
     "enable-video-track",
     IDS_FLAGS_ENABLE_VIDEO_TRACK_NAME,
     IDS_FLAGS_ENABLE_VIDEO_TRACK_DESCRIPTION,
@@ skipping 612 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags