Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components/paper-behaviors/.bower.json

Index: third_party/polymer/v0_8/components/paper-behaviors/.bower.json
diff --git a/third_party/polymer/v0_8/components/paper-behaviors/.bower.json b/third_party/polymer/v0_8/components/paper-behaviors/.bower.json
new file mode 100644
index 0000000000000000000000000000000000000000..3a9355d0f0365fe119e8b7e25b50f1e10683c6f0
--- /dev/null
+++ b/third_party/polymer/v0_8/components/paper-behaviors/.bower.json
@@ -0,0 +1,25 @@
+{
+  "name": "paper-behaviors",
+  "private": true,
+  "dependencies": {
+    "polymer": "polymer/polymer#v0.8.0-rc.7",
+    "iron-behaviors": "polymerelements/iron-behaviors#^0.8.0"
+  },
+  "devDependencies": {
+    "paper-card": "polymerelements/paper-card#v0.8.0",
+    "iron-test-helpers": "polymerelements/iron-test-helpers#^0.8.0",
+    "webcomponentsjs": "webcomponents/webcomponentsjs#^0.6.0",
+    "web-component-tester": "*"
+  },
+  "homepage": "https://github.com/polymerelements/paper-behaviors",
+  "version": "0.8.1",
+  "_release": "0.8.1",
+  "_resolution": {
+    "type": "version",
+    "tag": "v0.8.1",
+    "commit": "516c874900a1d51f7b9a82d8f251b17be0d93499"
+  },
+  "_source": "git://github.com/polymerelements/paper-behaviors.git",
+  "_target": "^0.8.0",
+  "_originalSource": "polymerelements/paper-behaviors"
+}