Cleanup: Extract icon related methods outside of util.js

ui/webui/resources/js/compiled_resources2.gyp

 # Copyright 2015 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.
 {
   'targets': [
     {
       'target_name': 'action_link',
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'assert',
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'cr',
       'dependencies': [
         'promise_resolver',
         '<(EXTERNS_GYP):chrome_send',
         'assert',
       ],
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'event_tracker',
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
+      'target_name': 'icon',
+      'dependencies': [
+        'cr',
+        'util',
+      ],
+      'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
+    },
+    {
       'target_name': 'i18n_template_no_process',
       'dependencies': [
         'load_time_data',
         '<(EXTERNS_GYP):pending_compiler_externs',
       ],
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'i18n_template',
       'dependencies': [
@@ skipping 35 matching lines @@
     },
     {
       'target_name': 'web_ui_listener_behavior',
       'dependencies': [
         'cr',
       ],
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
   ],
 }