Removed Polymer elements depending on web-animations-js.

third_party/polymer/components/paper-menu-button/paper-menu-button-transition.css

Index: third_party/polymer/components/paper-menu-button/paper-menu-button-transition.css
diff --git a/third_party/polymer/components/paper-menu-button/paper-menu-button-transition.css b/third_party/polymer/components/paper-menu-button/paper-menu-button-transition.css
deleted file mode 100644
index 6d1ba6e6ade46548cdf2d7954370bc271f088bb6..0000000000000000000000000000000000000000
--- a/third_party/polymer/components/paper-menu-button/paper-menu-button-transition.css
+++ /dev/null
@@ -1,19 +0,0 @@
-/* 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-menu-button-transition) {
-  outline: none;
-  opacity: 0;
-  transition: transform 0.2s ease-in-out, opacity 0.2s ease-in;
-  -webkit-transition: -webkit-transform 0.2s ease-in-out, opacity 0.2s ease-in;
-}
-
-:host(.paper-menu-button-transition.paper-menu-button-opened) {
-  opacity: 1;
-  transform: none;
-  -webkit-transform: none;
-}