Rename all isolate_dependency_* to files.

ash/ash.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
     # These files lists are shared with the GN build.
     'ash_sources': [
@@ skipping 1269 matching lines @@
     ['test_isolation_mode != "noop"', {
       'targets': [
         {
           'target_name': 'ash_unittests_run',
           'type': 'none',
           'dependencies': [
             'ash_unittests',
           ],
           'includes': [
             '../build/isolate.gypi',
-            'ash_unittests.isolate',
           ],
           'sources': [
             'ash_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }