Roll third_party/polymer.

third_party/polymer/v1_0/components-chromium/iron-a11y-announcer/bower.json

 {
-  "name": "iron-a11y-keys",
+  "name": "iron-a11y-announcer",
   "version": "1.0.4",
-  "description": "A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.",
+  "description": "A singleton element that simplifies announcing text to screen readers.",
   "keywords": [
     "web-components",
-    "web-component",
     "polymer",
     "a11y",
-    "input"
+    "live"
   ],
   "authors": [
     "The Polymer Authors"
   ],
   "repository": {
     "type": "git",
-    "url": "git://github.com/PolymerElements/iron-a11y-keys.git"
+    "url": "git://github.com/PolymerElements/iron-a11y-announcer.git"
   },
-  "main": "iron-a11y-keys.html",
+  "main": "iron-a11y-announcer.html",
   "license": "http://polymer.github.io/LICENSE.txt",
   "dependencies": {
-    "polymer": "polymer/polymer#^1.0.0",
-    "iron-a11y-keys-behavior": "polymerelements/iron-a11y-keys-behavior#^1.0.0"
+    "polymer": "polymer/polymer#^1.0.0"
   },
   "devDependencies": {
-    "paper-styles": "PolymerElements/paper-styles#^1.0.2",
     "iron-component-page": "polymerelements/iron-component-page#^1.0.0",
+    "iron-test-helpers": "polymerelements/iron-test-helpers#^1.0.0",
+    "paper-button": "polymerelements/paper-button#^1.0.0",
+    "paper-styles": "polymerelements/paper-styles#^1.0.0",
     "test-fixture": "polymerelements/test-fixture#^1.0.0",
     "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0",
-    "web-component-tester": "polymer/web-component-tester#^3.4.0",
-    "iron-test-helpers": "polymerelements/iron-test-helpers#^1.0.0"
+    "web-component-tester": "polymer/web-component-tester#^3.4.0"
   },
   "ignore": []
 }