Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components-chromium/iron-icon/bower.json

Index: third_party/polymer/v0_8/components-chromium/iron-icon/bower.json
diff --git a/third_party/polymer/v0_8/components-chromium/iron-icon/bower.json b/third_party/polymer/v0_8/components-chromium/iron-icon/bower.json
new file mode 100644
index 0000000000000000000000000000000000000000..f3763f0f44cdefd7305b6be1d5727e069966e818
--- /dev/null
+++ b/third_party/polymer/v0_8/components-chromium/iron-icon/bower.json
@@ -0,0 +1,16 @@
+{
+  "name": "iron-icon",
+  "private": true,
+  "dependencies": {
+    "iron-meta": "polymerelements/iron-meta#^0.8.0",
+    "polymer": "polymer/polymer#v0.8.0-rc.7"
+  },
+  "devDependencies": {
+    "test-fixture": "polymerelements/test-fixture#^0.8.0",
+    "iron-iconset": "polymerelements/iron-iconset#^0.8.0",
+    "core-icons": "polymerelements/iron-icons#^0.8.0",
+    "iron-doc-viewer": "polymerelements/iron-doc-viewer#^0.8.0",
+    "webcomponentsjs": "webcomponents/webcomponentsjs#^0.6.0",
+    "web-component-tester": "~2.2.6"
+  }
+}