Update upstream dependencies to match googlesource A few of the bower dependencies were outdated compared to those used by googlesource. There was a noticable difference for the better in the updated iron-overlay-behavior, in that the top menu scrolls with the page when opened in the updated version, but not in the previous version. Change-Id: Ib7697f8a86132d667f180129d319b4f7d437ff3a 
diff --git a/WORKSPACE b/WORKSPACE index b16e65f..3874578 100644 --- a/WORKSPACE +++ b/WORKSPACE 
@@ -1055,8 +1055,8 @@  bower_archive(  name = "iron-dropdown",  package = "polymerelements/iron-dropdown", - sha1 = "63e3d669a09edaa31c4f05afc76b53b919ef0595", - version = "1.4.0", + sha1 = "ac96fe31cdf203a63426fa75131b43c98c0597d3", + version = "1.5.5",  )    bower_archive( @@ -1069,15 +1069,15 @@  bower_archive(  name = "iron-overlay-behavior",  package = "polymerelements/iron-overlay-behavior", - sha1 = "83181085fda59446ce74fd0d5ca30c223f38ee4a", - version = "1.7.6", + sha1 = "74cda9d7bf98e7a5e5004bc7ebdb6d208d49e11e", + version = "2.0.0",  )    bower_archive(  name = "iron-selector",  package = "polymerelements/iron-selector", - sha1 = "c57235dfda7fbb987c20ad0e97aac70babf1a1bf", - version = "1.5.2", + sha1 = "e0ee46c28523bf17730318c3b481a8ed4331c3b2", + version = "2.0.0",  )    bower_archive(