Rename all isolate_dependency_* to files.

chrome/installer/mini_installer_tests.isolate

 # Copyright 2013 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': [
     ['OS=="win"', {
       'variables': {
         'command': [
           'python',
           '../test/mini_installer/test_installer.py',
           '../test/mini_installer/config/config.config',
           '--build-dir=<(PRODUCT_DIR)/..',
           '--target=Release',
           '--force-clean',
         ],
-        'isolate_dependency_tracked': [
+        'files': [
+          '../test/mini_installer/',
           '<(PRODUCT_DIR)/mini_installer.exe',
         ],
-        'isolate_dependency_untracked': [
-          '../test/mini_installer/',
-        ],
       },
     }],
   ],
 }