Webapp changes to support third party authentication

remoting/webapp/manifest.json

Index: remoting/webapp/manifest.json
diff --git a/remoting/webapp/manifest.json b/remoting/webapp/manifest.json
index 13f93466a9fad2e46644bb94abe01deb77a3070d..d1f8d1f07e0c7d67bf00bcca3be5a7deb2744ea8 100644
--- a/remoting/webapp/manifest.json
+++ b/remoting/webapp/manifest.json
@@ -20,9 +20,18 @@
         "OAUTH2_REDIRECT_URL"
       ],
       "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; font-src *; connect-src 'self' OAUTH2_ACCOUNTS_HOST GOOGLE_API_HOSTS TALK_GADGET_HOST https://relay.google.com",
+  "optional_permissions": [
+    "<all_urls>"
+  ],
   "permissions": [
     "OAUTH2_ACCOUNTS_HOST/*",
     "OAUTH2_API_BASE_URL/*",
@@ -31,7 +40,7 @@
     "https://relay.google.com/*",
     "storage",
     "clipboardRead",
-    "clipboardWrite"
+    "clipboardWrite",
   ],
   "plugins": [
     { "path": "remoting_host_plugin.dll", "public": false },