Adding GYP V2 targets for all Polymer code (with a script!).

third_party/polymer/v1_0/components-chromium/paper-behaviors/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.
 {
   'targets': [
     {
+      'target_name': 'paper-button-behavior-extracted',
+      'dependencies': [
+        '../iron-behaviors/compiled_resources2.gyp:iron-button-state-extracted',
+        'paper-ripple-behavior-extracted'
+      ],
+      'includes': [
+        '../../../../closure_compiler/compile_js2.gypi'
+      ]
+    },
+    {
+      'target_name': 'paper-checked-element-behavior-extracted',
+      'dependencies': [
+        '../iron-checked-element-behavior/compiled_resources2.gyp:iron-checked-element-behavior-extracted',
+        'paper-inky-focus-behavior-extracted'
+      ],
+      'includes': [
+        '../../../../closure_compiler/compile_js2.gypi'
+      ]
+    },
+    {
       'target_name': 'paper-inky-focus-behavior-extracted',
       'dependencies': [
         '../iron-behaviors/compiled_resources2.gyp:iron-button-state-extracted',
-        '../iron-behaviors/compiled_resources2.gyp:iron-control-state-extracted',
-        'paper-ripple-behavior-extracted',
+        'paper-ripple-behavior-extracted'
       ],
-      'includes': ['../../../../closure_compiler/compile_js2.gypi'],
+      'includes': [
+        '../../../../closure_compiler/compile_js2.gypi'
+      ]
     },
     {
       'target_name': 'paper-ripple-behavior-extracted',
       'dependencies': [
-        '../iron-behaviors/compiled_resources2.gyp:iron-button-state-extracted',
-        '../paper-ripple/compiled_resources2.gyp:paper-ripple-extracted',
+        '../paper-ripple/compiled_resources2.gyp:paper-ripple-extracted'
       ],
-      'includes': ['../../../../closure_compiler/compile_js2.gypi'],
-    },
-  ],
-}
+      'includes': [
+        '../../../../closure_compiler/compile_js2.gypi'
+      ]
+    }
+  ]
+}