[GN] Set v8_use_external_snapshot_data for the same configurations as GN.

chrome/android/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/module_args/v8.gni")
 import("//chrome/version.gni")
 import("//third_party/icu/config.gni")
 import("channel.gni")
@@ skipping 313 matching lines @@
   deps = [
     "//chrome:packed_resources",
     "//chrome:packed_extra_resources",
   ]
 
   if (icu_use_data_file) {
     sources += [ "$root_build_dir/icudtl.dat" ]
   }
   if (v8_use_external_startup_data) {
     sources += [
-      "$root_gen_dir/natives_blob.bin",
-      "$root_gen_dir/snapshot_blob.bin",
+      "$root_build_dir/natives_blob.bin",
+      "$root_build_dir/snapshot_blob.bin",
     ]
   }
 }
 
 chrome_shell_manifest =
     "$target_gen_dir/chrome_shell_manifest/AndroidManifest.xml"
 
 # GYP: //chrome/chrome_shell.gypi:chrome_shell_manifest
 jinja_template("chrome_shell_manifest") {
   testonly = true
@@ skipping 165 matching lines @@
   ]
 }
 
 zip("chrome_version_srcjar") {
   inputs = [
     chrome_version_java_file,
   ]
   output = "$target_gen_dir/$target_name.srcjar"
   base_dir = chrome_version_java_dir
 }