net: add two Google backup pins.

net/base/transport_security_state_static.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file contains the HSTS preloaded list in a machine readable format.
 
 // The top-level element is a dictionary with two keys: "pinsets" maps details
 // of certificate pinning to a name and "entries" contains the HSTS details for
 // each host.
 //
@@ skipping 28 matching lines @@
         "TestSPKI"
       ]
     },
     {
       "name": "google",
       "static_spki_hashes": [
         "VeriSignClass3",
         "VeriSignClass3_G3",
         "Google1024",
         "Google2048",
+        "GoogleBackup1024",
+        "GoogleBackup2048",
         "EquifaxSecureCA",
         "GeoTrustGlobal"
       ],
       "bad_static_spki_hashes": [
         "Aetna",
         "Intel",
         "TCTrustCenter",
         "Vodafone"
       ]
     },
@@ skipping 509 matching lines @@
 
     // Entries that are only valid if the client supports SNI.
     { "name": "gmail.com", "mode": "force-https", "pins": "google", "snionly": true },
     { "name": "googlemail.com", "mode": "force-https", "pins": "google", "snionly": true },
     { "name": "www.gmail.com", "mode": "force-https", "pins": "google", "snionly": true },
     { "name": "www.googlemail.com", "mode": "force-https", "pins": "google", "snionly": true },
     { "name": "google-analytics.com", "include_subdomains": true, "pins": "google", "snionly": true },
     { "name": "googlegroups.com", "include_subdomains": true, "pins": "google", "snionly": true }
   ]
 }