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diff --git a/chromium/third_party/catapult/third_party/polymer3/bower_components/polymer/lib/utils/resolve-url.js b/chromium/third_party/catapult/third_party/polymer3/bower_components/polymer/lib/utils/resolve-url.js
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+++ b/chromium/third_party/catapult/third_party/polymer3/bower_components/polymer/lib/utils/resolve-url.js
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+/**
+@license
+Copyright (c) 2017 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
+*/
+import './boot.js';
+
+let CSS_URL_RX = /(url\()([^)]*)(\))/g;
+let ABS_URL = /(^\/)|(^#)|(^[\w-\d]*:)/;
+let workingURL;
+let resolveDoc;
+/**
+ * Resolves the given URL against the provided `baseUri'.
+ *
+ * Note that this function performs no resolution for URLs that start
+ * with `/` (absolute URLs) or `#` (hash identifiers).  For general purpose
+ * URL resolution, use `window.URL`.
+ *
+ * @param {string} url Input URL to resolve
+ * @param {?string=} baseURI Base URI to resolve the URL against
+ * @return {string} resolved URL
+ */
+export function resolveUrl(url, baseURI) {
+  if (url && ABS_URL.test(url)) {
+    return url;
+  }
+  // Lazy feature detection.
+  if (workingURL === undefined) {
+    workingURL = false;
+    try {
+      const u = new URL('b', 'http://a');
+      u.pathname = 'c%20d';
+      workingURL = (u.href === 'http://a/c%20d');
+    } catch (e) {
+      // silently fail
+    }
+  }
+  if (!baseURI) {
+    baseURI = document.baseURI || window.location.href;
+  }
+  if (workingURL) {
+    return (new URL(url, baseURI)).href;
+  }
+  // Fallback to creating an anchor into a disconnected document.
+  if (!resolveDoc) {
+    resolveDoc = document.implementation.createHTMLDocument('temp');
+    resolveDoc.base = resolveDoc.createElement('base');
+    resolveDoc.head.appendChild(resolveDoc.base);
+    resolveDoc.anchor = resolveDoc.createElement('a');
+    resolveDoc.body.appendChild(resolveDoc.anchor);
+  }
+  resolveDoc.base.href = baseURI;
+  resolveDoc.anchor.href = url;
+  return resolveDoc.anchor.href || url;
+
+}
+
+/**
+ * Resolves any relative URL's in the given CSS text against the provided
+ * `ownerDocument`'s `baseURI`.
+ *
+ * @param {string} cssText CSS text to process
+ * @param {string} baseURI Base URI to resolve the URL against
+ * @return {string} Processed CSS text with resolved URL's
+ */
+export function resolveCss(cssText, baseURI) {
+  return cssText.replace(CSS_URL_RX, function(m, pre, url, post) {
+    return pre + '\'' +
+      resolveUrl(url.replace(/["']/g, ''), baseURI) +
+      '\'' + post;
+  });
+}
+
+/**
+ * Returns a path from a given `url`. The path includes the trailing
+ * `/` from the url.
+ *
+ * @param {string} url Input URL to transform
+ * @return {string} resolved path
+ */
+export function pathFromUrl(url) {
+  return url.substring(0, url.lastIndexOf('/') + 1);
+}