Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components-chromium/polymer/src/micro/debouncer-extracted.js

Index: third_party/polymer/v0_8/components-chromium/polymer/src/micro/debouncer-extracted.js
diff --git a/third_party/polymer/v0_8/components-chromium/polymer/src/micro/debouncer-extracted.js b/third_party/polymer/v0_8/components-chromium/polymer/src/micro/debouncer-extracted.js
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@@ -0,0 +1,47 @@
+
+
+  Polymer.Base._addFeature({
+
+    _setupDebouncers: function() {
+      this._debouncers = {};
+    },
+
+    /**
+     * Debounce signals.
+     *
+     * Call `debounce` to collapse multiple requests for a named task into
+     * one invocation which is made after the wait time has elapsed with
+     * no new request.
+     *
+     *     debouncedClickAction: function(e) {
+     *       // will not call `processClick` more than once per 100ms
+     *       this.debounce('click', function() {
+     *        this.processClick;
+     *       }, 100);
+     *     }
+     *
+     * @method debounce
+     * @param String {String} jobName A string to indentify the debounce job.
+     * @param Function {Function} callback A function that is called (with `this` context) when the wait time elapses.
+     * @param Number {Number} wait Time in milliseconds (ms) after the last signal that must elapse before invoking `callback`
+     * @type Handle
+     */
+    debounce: function(jobName, callback, wait) {
+      this._debouncers[jobName] = Polymer.Debounce.call(this,
+        this._debouncers[jobName], callback, wait);
+    },
+
+    isDebouncerActive: function(jobName) {
+      var debouncer = this._debouncers[jobName];
+      return debouncer && debouncer.finish;
+    },
+
+    flushDebouncer: function(jobName) {
+      var debouncer = this._debouncers[jobName];
+      if (debouncer) {
+        debouncer.complete();
+      }
+    }
+
+  });
+