Remove selenium_tests, they're obsolete.

build/all.gyp

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'All',
       'type': 'none',
       'xcode_create_dependents_test_runner': 1,
@@ skipping 402 matching lines @@
           'dependencies': [
             '../chrome/chrome.gyp:browser_tests',
             '../chrome/chrome.gyp:installer_util_unittests',
             '../chrome/chrome.gyp:interactive_ui_tests',
             '../chrome/chrome.gyp:mini_installer_test',
             '../chrome/chrome.gyp:nacl_ui_tests',
             '../chrome/chrome.gyp:nacl_sandbox_tests',
             '../chrome/chrome.gyp:performance_ui_tests',
             '../chrome/chrome.gyp:plugin_tests',
             '../chrome/chrome.gyp:safe_browsing_tests',
-            '../chrome/chrome.gyp:selenium_tests',
             '../chrome/chrome.gyp:sync_integration_tests',
             '../chrome/chrome.gyp:sync_unit_tests',
             '../chrome/chrome.gyp:ui_tests',
             '../chrome/chrome.gyp:unit_tests',
             # mini_installer_tests depends on mini_installer. This should be
             # defined in installer.gyp.
             '../chrome/installer/mini_installer.gyp:mini_installer',
             '../chrome_frame/chrome_frame.gyp:chrome_frame_net_tests',
             '../chrome_frame/chrome_frame.gyp:chrome_frame_perftests',
             '../chrome_frame/chrome_frame.gyp:chrome_frame_reliability_tests',
@@ skipping 128 matching lines @@
             '../third_party/cacheinvalidation/cacheinvalidation.gyp:cacheinvalidation_unittests',
             '../third_party/libphonenumber/libphonenumber.gyp:libphonenumber_unittests',
             '../views/views.gyp:views_unittests',
             'temp_gyp/googleurl.gyp:googleurl_unittests',
           ],
         },
       ],  # targets
     }], # "chromeos==1"
   ], # conditions
 }