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

third_party/polymer/v1_0/components-chromium/paper-menu-button/compiled_resources2.gyp

Index: third_party/polymer/v1_0/components-chromium/paper-menu-button/compiled_resources2.gyp
diff --git a/third_party/polymer/v1_0/components-chromium/paper-menu-button/compiled_resources2.gyp b/third_party/polymer/v1_0/components-chromium/paper-menu-button/compiled_resources2.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..c3253cf7aafb2ff70247343ef7956864a69c3b65
--- /dev/null
+++ b/third_party/polymer/v1_0/components-chromium/paper-menu-button/compiled_resources2.gyp
@@ -0,0 +1,33 @@
+# 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-menu-button-animations-extracted',
+      'dependencies': [
+        '../neon-animation/compiled_resources2.gyp:web-animations-extracted',
+        '../neon-animation/compiled_resources2.gyp:neon-animation-behavior-extracted'
+      ],
+      'includes': [
+        '../../../../closure_compiler/compile_js2.gypi'
+      ]
+    },
+    {
+      'target_name': 'paper-menu-button-extracted',
+      'dependencies': [
+        '../iron-dropdown/compiled_resources2.gyp:iron-dropdown-extracted',
+        '../iron-a11y-keys-behavior/compiled_resources2.gyp:iron-a11y-keys-behavior-extracted',
+        '../iron-behaviors/compiled_resources2.gyp:iron-control-state-extracted',
+        '../paper-material/compiled_resources2.gyp:paper-material-extracted',
+        '../paper-styles/compiled_resources2.gyp:default-theme-extracted',
+        '../neon-animation/compiled_resources2.gyp:fade-in-animation-extracted',
+        '../neon-animation/compiled_resources2.gyp:fade-out-animation-extracted',
+        'paper-menu-button-animations-extracted'
+      ],
+      'includes': [
+        '../../../../closure_compiler/compile_js2.gypi'
+      ]
+    }
+  ]
+}