Inline scripts were extracted from Polymer elements.

third_party/polymer/components-chromium/paper-checkbox/paper-checkbox-extracted.js

+
+
+  Polymer('paper-checkbox', {
+    
+    /**
+     * Fired when the checked state changes.
+     *
+     * @event change
+     */
+    
+    toggles: true,
+
+    checkedChanged: function() {
+      var cl = this.$.checkbox.classList;
+      cl.toggle('checked', this.checked);
+      cl.toggle('unchecked', !this.checked);
+      cl.toggle('checkmark', !this.checked);
+      cl.toggle('box', this.checked);
+      this.setAttribute('aria-checked', this.checked ? 'true': 'false');
+      this.fire('change');
+    },
+
+    checkboxAnimationEnd: function() {
+      var cl = this.$.checkbox.classList;
+      cl.toggle('checkmark', this.checked && !cl.contains('checkmark'));
+      cl.toggle('box', !this.checked && !cl.contains('box'));
+    }
+
+  });
+