Create list file for GN target //remoting/webapp:unit_tests

remoting/webapp/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.
 
 # Keep in sync with targets in remoting/remoting_client.gypi.
 
 import("//build/config/features.gni")
 import("//remoting/webapp/build_template.gni")
 import("//remoting/webapp/files.gni")
 
@@ skipping 107 matching lines @@
   outputs = [
     "$remoting_unit_test_out_dir/qunit/{{source_file_part}}",
   ]
 }
 
 action("build_unittest") {
   script = "build-html.py"
   outputs = [
     "$remoting_unit_test_out_dir/unittests.html",
   ]
-  args = rebase_path(outputs, root_build_dir) + [
-           rebase_path(remoting_webapp_unittests_template_main, root_build_dir),
-           "--exclude-js",
-         ] + rebase_path(remoting_webapp_unittests_exclude_js_files,
-                         root_build_dir) + [ "--js" ] +
-         rebase_path(remoting_webapp_unittests_all_js_files, root_build_dir) +
-         [ "--instrument-js" ] + rebase_path(webapp_js_files, root_build_dir)
+
+  # Create a file that contains a list of all the JavaScript files needed
+  # to build the unit test page. This is needed to avoid problems on platforms
+  # that limit the size of a command line.
+  file_list = "$target_gen_dir/remoting_webapp_unittest_files.txt"
+  files = rebase_path(remoting_webapp_unittests_all_js_files, root_build_dir)
+  write_file(file_list, files)
+
+  args =
+      rebase_path(outputs, root_build_dir) + [
+        rebase_path(remoting_webapp_unittests_template_main, root_build_dir),
+        "--exclude-js",
+      ] +
+      rebase_path(remoting_webapp_unittests_exclude_js_files, root_build_dir) +
+      [
+        "--js-list-file",
+        rebase_path(file_list, root_build_dir),
+      ] + [ "--instrument-js" ] + rebase_path(webapp_js_files, root_build_dir)
 }