[GCM] Make GCM API not work in incognito mode

chrome/test/data/extensions/api_test/gcm/functions/incognito/test.js

Index: chrome/test/data/extensions/api_test/gcm/functions/incognito/test.js
diff --git a/chrome/test/data/extensions/api_test/gcm/functions/register/register.js b/chrome/test/data/extensions/api_test/gcm/functions/incognito/test.js
similarity index 51%
copy from chrome/test/data/extensions/api_test/gcm/functions/register/register.js
copy to chrome/test/data/extensions/api_test/gcm/functions/incognito/test.js
index e1a20e20d1507eacfda9de53dd07e4e3414b3794..8184b38c9303a2a7c02cc4172e69e8ebcedaca1d 100644
--- a/chrome/test/data/extensions/api_test/gcm/functions/register/register.js
+++ b/chrome/test/data/extensions/api_test/gcm/functions/incognito/test.js
@@ -3,9 +3,10 @@
 // found in the LICENSE file.
 
 chrome.test.runTests([
-  function testRegister() {
-    var senderIds = ["Sender1", "Sender2"];
-    chrome.gcm.register(senderIds, function(registrationId) {
+  function testIncognito() {
+    chrome.gcm.register(["Sender"], function(registrationId) {
+      chrome.test.assertEq(chrome.runtime.lastError != undefined,
+                           chrome.extension.inIncognitoContext);
       chrome.test.succeed();
     });
   }