Fix more references to webkit's run_webkit_tests.py.

WATCHLISTS

 # 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.
 
 # Watchlist Rules
 # Refer: http://dev.chromium.org/developers/contributing-code/watchlists
 
 # IMPORTANT: The regular expression filepath is tested against each path using
 # re.search, so it is not usually necessary to add .*.
 
@@ skipping 389 matching lines @@
                   'chrome/browser/ui/search/|'\
                   'chrome/browser/resources/local_ntp/|'\
                   'chrome/common/search_types.*',
     },
     'ipc': {
       'filepath': 'ipc/ipc',
     },
     'libwebp': {
       'filepath': 'third_party/libwebp'
     },
-    'layout_tests': {
-      'filepath': 'webkit/(tools|data)/(layout_tests|test_shell)/',
-    },
     'linux_fonts': {
       'filepath': 'ui/gfx/font_render_params_.*|'\
                   'ui/gfx/platform_font_pango.*|'\
                   'ui/gfx/render_text_linux.*',
     },
     'linux_sandboxing': {
       'filepath': 'sandbox/linux/',
     },
     'linux_seccomp_bpf': {
       'filepath': 'content/common/sandbox.*linux.cc',
@@ skipping 583 matching lines @@
                      'mcasas+watch@chromium.org',
                      'posciak+watch@chromium.org'],
     'website_settings': ['markusheintz@chromium.org'],
     'windows_sandboxing': ['wfh+watch@chromium.org'],
     'worker': ['jam@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
   },
 }