Inline scripts were extracted from Polymer elements.

third_party/polymer/components-chromium/paper-dialog/paper-dialog-transition.css

+/* Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt */
+
+:host(.paper-dialog-transition) {
+  outline: none;
+  opacity: 0;
+  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+  -webkit-transition: -webkit-transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+:host(.paper-dialog-transition.core-opened) {
+  opacity: 1;
+  transform: none;
+  -webkit-transform: none;
+}
+
+:host(.paper-dialog-transition-bottom) {
+  transform: scale(0.9) translateY(200%);
+  -webkit-transform: scale(0.9) translateY(200%);
+}
+
+:host(.paper-dialog-transition-center.core-opened) {
+  animation: paper-dialog-transition-center-keyframes 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+  -webkit-animation: paper-dialog-transition-center-keyframes 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+@keyframes paper-dialog-transition-center-keyframes {
+  0% {
+    transform: scale(0.5) translateY(0);
+    -webkit-transform: scale(0.5) translateY(0);
+  }
+  90% {
+    transform: scale(1) translateY(-10px);
+    -webkit-transform: scale(1) translateY(-10px);
+  }
+  100% {
+    transform: scale(1) translateY(0);
+    -webkit-transform: scale(1) translateY(0);
+  }
+}
+
+@-webkit-keyframes paper-dialog-transition-center-keyframes {
+  0% {
+    transform: scale(0.5) translateY(0);
+    -webkit-transform: scale(0.5) translateY(0);
+  }
+  90% {
+    transform: scale(1) translateY(-10px);
+    -webkit-transform: scale(1) translateY(-10px);
+  }
+  100% {
+    transform: scale(1) translateY(0);
+    -webkit-transform: scale(1) translateY(0);
+  }
+}