CastExtensionHandler for Chromoting Webapp

remoting/webapp/manifest.json.jinja2

 {
   {{ MANIFEST_KEY_FOR_UNOFFICIAL_BUILD }}
   "name": "__MSG_PRODUCT_NAME__",
   "version": "{{ FULL_APP_VERSION }}",
   "description": "__MSG_PRODUCT_DESCRIPTION__",
   "manifest_version": 2,
   "default_locale": "en",
   "minimum_chrome_version": "32",
   "app": {
 {% if webapp_type == 'v1' %}
@@ skipping 19 matching lines @@
       ],
       "js": [ "cs_oauth2_trampoline.js" ]
     },
     {
       "matches": [
         "{{ THIRD_PARTY_AUTH_REDIRECT_URL }}"
       ],
       "js": [ "cs_third_party_auth_trampoline.js" ]
     }
   ],
-  "content_security_policy": "default-src 'self'; script-src 'self' {{ TALK_GADGET_HOST }}; style-src 'self' https://fonts.googleapis.com; img-src 'self' {{ TALK_GADGET_HOST }} data:; font-src *; connect-src 'self' {{ OAUTH2_ACCOUNTS_HOST }} {{ GOOGLE_API_HOSTS }} {{ TALK_GADGET_HOST }} https://relay.google.com",
+  "content_security_policy": "default-src 'self'; script-src 'self' {{ TALK_GADGET_HOST }} https://www.gstatic.com; style-src 'self' https://fonts.googleapis.com; img-src 'self' {{ TALK_GADGET_HOST }} data:; font-src *; connect-src 'self' {{ OAUTH2_ACCOUNTS_HOST }} {{ GOOGLE_API_HOSTS }} {{ TALK_GADGET_HOST }} https://relay.google.com",
 {% endif %}
   "optional_permissions": [
     "<all_urls>"
   ],
 
 {% if webapp_type != 'v1' %}
   "oauth2": {
     "client_id": "{{ REMOTING_IDENTITY_API_CLIENT_ID }}",
     "scopes": [
       "https://www.googleapis.com/auth/chromoting https://www.googleapis.com/auth/googletalk https://www.googleapis.com/auth/userinfo#email"
@@ skipping 29 matching lines @@
         "udp-send-to",
         "udp-bind",
         "udp-multicast-membership",
         "resolve-host",
         "network-state"
       ]
     }
 {% endif %}
   ]
 }