Revert of Fix sbox_validation_tests & Make isolate_driver.py include the executable itself

media/cast/cast_unittests.isolate

 # Copyright 2015 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.
 {
   'conditions': [
     ['use_x11==0', {
       'variables': {
         'command': [
           '../../testing/test_env.py',
           '<(PRODUCT_DIR)/cast_unittests<(EXECUTABLE_SUFFIX)',
@@ skipping 20 matching lines @@
         'files': [
           '../../testing/xvfb.py',
           '<(PRODUCT_DIR)/xdisplaycheck<(EXECUTABLE_SUFFIX)',
         ],
       },
     }],
     ['OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
         'files': [
           '../../testing/test_env.py',
+          '<(PRODUCT_DIR)/cast_unittests<(EXECUTABLE_SUFFIX)',
         ],
       },
     }],
     ['OS=="mac" and asan==1 and fastbuild==0', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/cast_unittests.dSYM/',
         ],
       },
     }],
     ['OS=="win" and (fastbuild==0 or fastbuild==1)', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/cast_unittests.exe.pdb',
         ],
       },
     }],
   ],
   'includes': [
     '../../base/base.isolate',
   ],
 }