Update polymer to 1.11.0

Reason why is there is an upcoming breaking change in chrome which
will break things to do with styles.

I've created this fix I967aa12a7ead22650940caf66bb4fa61256992ac

But [1] recommends us be on polymer 1.10.1+. It includes this fix [2].

[1] https://github.com/TakayoshiKochi/deprecate-style-in-html-imports

[2] Polymer/polymer#4679

Change-Id: I8f8490e6644f9671a4d81751ab21d8ef5fe146fd

Author: paladox

WORKSPACE

@@ -1092,8 +1092,8 @@ bower_archive(
 bower_archive(
     name = "polymer",
     package = "polymer/polymer",
-    sha1 = "f2563ed9c8571057814b78d8f6cf275eeb953eeb",
-    version = "1.7.1",
+    sha1 = "62ce80a5079c1b97f6c5c6ebf6b350e741b18b9c",
+    version = "1.11.0",
 )
 
 bower_archive(