Upgrade to 1.0 and switch clients to dom-repeat where needed.

third_party/polymer/v0_8/components/iron-icon/iron-icon.html

 <!--
+@license
 Copyright (c) 2015 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
 -->
+
+<link rel="import" href="../polymer/polymer.html">
+<link rel="import" href="../iron-meta/iron-meta.html">
+<link rel="import" href="../iron-flex-layout/iron-flex-layout.html">
+
 <!--
 
 The `iron-icon` element displays an icon. By default an icon renders as a 24px square.
 
 Example using src:
 
     <iron-icon src="star.png"></iron-icon>
 
 Example setting size to 32px x 32px:
 
@@ skipping 26 matching lines @@
 
 Example of using an icon named `cherry` from a custom iconset with the ID `fruit`:
 
     <iron-icon icon="fruit:cherry"></iron-icon>
 
 See [iron-iconset](#iron-iconset) and [iron-iconset-svg](#iron-iconset-svg) for more information about
 how to create a custom iconset.
 
 See [iron-icons](http://www.polymer-project.org/components/iron-icons/demo.html) for the default set of icons.
 
-@group Polymer Core Elements
+
+### Styling
+
+The following custom properties are available for styling:
+
+Custom property | Description | Default
+----------------|-------------|----------
+`--iron-icon-width` | Width of the icon | `24px`
+`--iron-icon-height` | Height of the icon | `24px`
+
+@group Iron Elements
 @element iron-icon
+@demo demo/index.html
+@hero hero.svg
 @homepage polymer.github.io
 -->
 
-<link rel="import" href="../polymer/polymer.html">
-<link rel="import" href="../iron-meta/iron-meta.html">
-<link rel="import" href="../iron-flex-layout/iron-flex-layout.html">
-
-<style is="x-style">
-  * {
-    --iron-icon-size: 24px;
+<style is="custom-style">
+  :root {
+    --iron-icon-width: 24px;
+    --iron-icon-height: 24px;
   }
 </style>
 
 <dom-module id="iron-icon">
 
   <style>
     :host {
-      mixin(--layout-inline --layout-center-center);
+      @apply(--layout-inline);
+      @apply(--layout-center-center);
       position: relative;
 
       vertical-align: middle;
 
       fill: currentcolor;
 
-      width: var(--iron-icon-size);
-      height: var(--iron-icon-size);
+      width: var(--iron-icon-width);
+      height: var(--iron-icon-height);
     }
   </style>
 
   <template>
     <iron-meta id="meta" type="iconset"></iron-meta>
   </template>
 
+  <script>
+
+    Polymer({
+
+      is: 'iron-icon',
+
+      properties: {
+
+        /**
+         * The name of the icon to use. The name should be of the form:
+         * `iconset_name:icon_name`.
+         */
+        icon: {
+          type: String,
+          observer: '_iconChanged'
+        },
+
+        /**
+         * The name of the theme to used, if one is specified by the
+         * iconset.
+         */
+        theme: {
+          type: String,
+          observer: '_updateIcon'
+        },
+
+        /**
+         * If using iron-icon without an iconset, you can set the src to be
+         * the URL of an individual icon image file. Note that this will take
+         * precedence over a given icon attribute.
+         */
+        src: {
+          type: String,
+          observer: '_srcChanged'
+        }
+      },
+
+      _DEFAULT_ICONSET: 'icons',
+
+      _iconChanged: function(icon) {
+        var parts = (icon || '').split(':');
+        this._iconName = parts.pop();
+        this._iconsetName = parts.pop() || this._DEFAULT_ICONSET;
+        this._updateIcon();
+      },
+
+      _srcChanged: function(src) {
+        this._updateIcon();
+      },
+
+      _usesIconset: function() {
+        return this.icon || !this.src;
+      },
+
+      _updateIcon: function() {
+        if (this._usesIconset()) {
+          if (this._iconsetName) {
+            this._iconset = this.$.meta.byKey(this._iconsetName);
+            if (this._iconset) {
+              this._iconset.applyIcon(this, this._iconName, this.theme);
+            } else {
+              this._warn(this._logf('_updateIcon', 'could not find iconset `'
+                + this._iconsetName + '`, did you import the iconset?'));
+            }
+          }
+        } else {
+          if (!this._img) {
+            this._img = document.createElement('img');
+            this._img.style.width = '100%';
+            this._img.style.height = '100%';
+          }
+          this._img.src = this.src;
+          Polymer.dom(this.root).appendChild(this._img);
+        }
+      }
+
+    });
+
+  </script>
+
 </dom-module>
 
-<script>
-
-  Polymer({
-
-    is: 'iron-icon',
-
-    enableCustomStyleProperties: true,
-
-    properties: {
-
-      icon: {
-        type: String,
-        observer: '_iconChanged'
-      },
-
-      theme: {
-        type: String,
-        observer: '_updateIcon'
-      },
-
-      src: {
-        type: String,
-        observer: '_srcChanged'
-      }
-
-    },
-
-    _DEFAULT_ICONSET: 'icons',
-
-    _iconChanged: function(icon) {
-      var parts = (icon || '').split(':');
-      this._iconName = parts.pop();
-      this._iconsetName = parts.pop() || this._DEFAULT_ICONSET;
-      this._updateIcon();
-    },
-
-    _srcChanged: function(src) {
-      this._updateIcon();
-    },
-
-    _usesIconset: function() {
-      return this.icon || !this.src;
-    },
-
-    _updateIcon: function() {
-      if (this._usesIconset()) {
-        this._iconset =  this.$.meta.byKey(this._iconsetName);
-        if (this._iconset) {
-          this._iconset.applyIcon(this, this._iconName, this.theme);
-        } else {
-          console.warn('iron-icon: could not find iconset `'
-            + this._iconsetName + '`, did you import the iconset?');
-        }
-      } else {
-        if (!this._img) {
-          this._img = document.createElement('img');
-          this._img.style.width = '100%';
-          this._img.style.height = '100%';
-        }
-        this._img.src = this.src;
-        Polymer.dom(this.root).appendChild(this._img);
-      }
-    }
-
-  });
-
-</script>