Generate compiled_resources2.gyp for Polymer based on <link rel=import>s

third_party/polymer/v1_0/components-chromium/iron-selector/compiled_resources2.gyp

+# 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.
+#
+# NOTE: Created with generate_compiled_resources_gyp.py, please do not edit.
+{
+  'targets': [
+    {
+      'target_name': 'iron-multi-selectable-extracted',
+      'dependencies': [
+        'iron-selectable-extracted',
+      ],
+      'includes': ['../../../../closure_compiler/compile_js2.gypi'],
+    },
+    {
+      'target_name': 'iron-selectable-extracted',
+      'dependencies': [
+        'iron-selection-extracted',
+      ],
+      'includes': ['../../../../closure_compiler/compile_js2.gypi'],
+    },
+    {
+      'target_name': 'iron-selection-extracted',
+      'includes': ['../../../../closure_compiler/compile_js2.gypi'],
+    },
+    {
+      'target_name': 'iron-selector-extracted',
+      'dependencies': [
+        'iron-multi-selectable-extracted',
+      ],
+      'includes': ['../../../../closure_compiler/compile_js2.gypi'],
+    },
+  ],
+}