Fix issue with the Buy Plan button.

chrome/browser/resources/options2/chromeos/internet_detail.js

Index: chrome/browser/resources/options2/chromeos/internet_detail.js
diff --git a/chrome/browser/resources/options2/chromeos/internet_detail.js b/chrome/browser/resources/options2/chromeos/internet_detail.js
index 3d71534281bd2fdb1876a81e66963e4af1f3d7a5..af0a7b5ef0f8dd07c50c1f064153d21a15238ad6 100644
--- a/chrome/browser/resources/options2/chromeos/internet_detail.js
+++ b/chrome/browser/resources/options2/chromeos/internet_detail.js
@@ -124,7 +124,8 @@ cr.define('options.internet', function() {
       });
 
       $('buyplan-details').addEventListener('click', function(event) {
-        chrome.send('buyDataPlan', [params.servicePath]);
+        var data = $('connection-state').data;
+        chrome.send('buyDataPlan', [String(data.servicePath)]);
         OptionsPage.closeOverlay();
       });