Infrastructure for reading V8's initial snapshot from external files

chrome/sync_integration_tests.isolate

 # Copyright 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.
 {
   'conditions': [
     ['OS=="linux"', {
       'variables': {
         'command': [
           '../testing/xvfb.py',
           '<(PRODUCT_DIR)',
@@ skipping 80 matching lines @@
     ['chromeos==1', {
       'variables': {
         'files': [
           '<(PRODUCT_DIR)/libexif.so',
         ],
       },
     }],
   ],
   'includes': [
     '../base/base.isolate',
+    '../gin/v8.isolate',
   ],
 }