Allow specifying optional parameters to pass to the Authorization token URL.

chrome/common/extensions/docs/examples/extensions/oauth_contacts/chrome_ex_oauth.js

Index: chrome/common/extensions/docs/examples/extensions/oauth_contacts/chrome_ex_oauth.js
diff --git a/chrome/common/extensions/docs/examples/extensions/oauth_contacts/chrome_ex_oauth.js b/chrome/common/extensions/docs/examples/extensions/oauth_contacts/chrome_ex_oauth.js
index 2aef56ce6706332f502424ca26b489e5537a364c..7e137107b2fcf3a384fa3b9dbebd81361442ba89 100644
--- a/chrome/common/extensions/docs/examples/extensions/oauth_contacts/chrome_ex_oauth.js
+++ b/chrome/common/extensions/docs/examples/extensions/oauth_contacts/chrome_ex_oauth.js
@@ -32,6 +32,14 @@ function ChromeExOAuth(url_request_token, url_auth_token, url_access_token,
   this.key_token_secret = "oauth_token_secret";
   this.callback_page = opt_args && opt_args['callback_page'] ||
       "chrome_ex_oauth.html";
+  this.auth_params = {};
+  if (opt_args && opt_args['auth_params']) {
+    for (key in opt_args['auth_params']) {
+      if (opt_args['auth_params'].hasOwnProperty(key)) {
+        this.auth_params[key] = opt_args['auth_params'][key];
+      }
+    }
+  }
 };
 
 /*******************************************************************************
@@ -51,6 +59,9 @@ function ChromeExOAuth(url_request_token, url_auth_token, url_access_token,
  *         "consumer_secret" {String} OAuth consumer secret.
  *         "scope" {String} OAuth access scope.
  *         "app_name" {String} Application name.
+ *         "auth_params" {Object} Additional parameters to pass to the
+ *             Authorization token URL.  For an example, 'hd', 'hl', 'btmpl':
+ *             http://code.google.com/apis/accounts/docs/OAuth_ref.html#GetAuth
  * @return {ChromeExOAuth} An initialized ChromeExOAuth object.
  */
 ChromeExOAuth.initBackgroundPage = function(oauth_config) {
@@ -225,6 +236,9 @@ ChromeExOAuth.prototype.getAuthorizationHeader = function(url, method,
  *         "consumer_secret" {String} OAuth consumer secret.
  *         "scope" {String} OAuth access scope.
  *         "app_name" {String} Application name.
+ *         "auth_params" {Object} Additional parameters to pass to the
+ *             Authorization token URL.  For an example, 'hd', 'hl', 'btmpl':
+ *             http://code.google.com/apis/accounts/docs/OAuth_ref.html#GetAuth
  * @return {ChromeExOAuth} An initialized ChromeExOAuth object.
  */
 ChromeExOAuth.fromConfig = function(oauth_config) {
@@ -236,7 +250,8 @@ ChromeExOAuth.fromConfig = function(oauth_config) {
     oauth_config['consumer_secret'],
     oauth_config['scope'],
     {
-      'app_name' : oauth_config['app_name']
+      'app_name' : oauth_config['app_name'],
+      'auth_params' : oauth_config['auth_params']
     }
   );
 };
@@ -501,6 +516,11 @@ ChromeExOAuth.prototype.onRequestToken = function(callback, xhr) {
       this.setTokenSecret(params['oauth_token_secret']);
       var url = ChromeExOAuth.addURLParam(this.url_auth_token,
                                           "oauth_token", token);
+      for (var key in this.auth_params) {
+        if (this.auth_params.hasOwnProperty(key)) {
+          url = ChromeExOAuth.addURLParam(url, key, this.auth_params[key]);
+        }
+      }
       callback(url);
     } else {
       throw new Error("Fetching request token failed. Status " + xhr.status);
@@ -570,5 +590,4 @@ ChromeExOAuth.prototype.onAccessToken = function(callback, xhr) {
       throw new Error("Fetching access token failed with status " + xhr.status);
     }
   }
-};
-
+};