GN files for running Closure Compiler

third_party/closure_compiler/BUILD.gn

Index: third_party/closure_compiler/BUILD.gn
diff --git a/third_party/closure_compiler/BUILD.gn b/third_party/closure_compiler/BUILD.gn
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+# Copyright 2016 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.
+
+# Add your directory-specific GN target to this list for it to be continuously
+# typechecked on the builder:
+# http://build.chromium.org/p/chromium.fyi/builders/Closure%20Compilation%20Linux
+#
+# Also, see our guide to Closure compilation in chrome:
+# https://chromium.googlesource.com/chromium/src/+/master/docs/closure_compilation.md
+
+group("compile_js_all") {
+  deps = [
+    "//chrome/browser/resources/chromeos/braille_ime:compile_js",
+    "//ui/webui/resources/js:compile_js",
+    "//ui/webui/resources/js/chromeos:compile_js",
+    "//ui/webui/resources/js/cr:compile_js",
+  ]
+}