Remove window.status plumbing, it's unused and the spec says it's a dummy

content/shell/test_runner/layout_test_runtime_flags.h

 // Copyright 2016 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.
 
 #ifndef CONTENT_SHELL_TEST_RUNNER_LAYOUT_TEST_RUNTIME_FLAGS_H_
 #define CONTENT_SHELL_TEST_RUNNER_LAYOUT_TEST_RUNTIME_FLAGS_H_
 
 #include <string>
 
 #include "base/logging.h"
@@ skipping 154 matching lines @@
 
   // If true, new windows can be opened via javascript or by plugins. By
   // default, set to false and can be toggled to true using
   // setCanOpenWindows().
   DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG(can_open_windows)
 
   // If true, output a descriptive line each time WebViewClient::createView
   // is invoked.
   DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG(dump_create_view)
 
-  // If true, the test_shell will dump all changes to window.status.
-  DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG(dump_window_status_changes)
-
   // If true, the test_shell will output descriptive test for spellcheck
   // execution.
   DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG(dump_spell_check_callbacks)
 
   // If true, content_shell will output text for alert(), confirm(), prompt(),
   // etc.
   DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG(dump_javascript_dialogs)
 
   // True if the test called testRunner.setCustomTextOutput.
   DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG(has_custom_text_output)
@@ skipping 16 matching lines @@
 
  private:
   TrackedDictionary dict_;
 
   DISALLOW_COPY_AND_ASSIGN(LayoutTestRuntimeFlags);
 };
 
 }  // namespace test_runner
 
 #endif  // CONTENT_SHELL_TEST_RUNNER_LAYOUT_TEST_RUNTIME_FLAGS_H_