[Clean-up] Remove some dead code for handling Webstore sign-in.

chrome/test/data/extensions/api_test/webstore_private/common.js

Index: chrome/test/data/extensions/api_test/webstore_private/common.js
diff --git a/chrome/test/data/extensions/api_test/webstore_private/common.js b/chrome/test/data/extensions/api_test/webstore_private/common.js
index c37af26a5b475a7336355f6cf7d9fbb58dcddfbe..7aa92fd2dc4207020c593926d726c7c11d3b58e1 100644
--- a/chrome/test/data/extensions/api_test/webstore_private/common.js
+++ b/chrome/test/data/extensions/api_test/webstore_private/common.js
@@ -96,29 +96,3 @@ function installAndCleanUp(installOptions, whileInstalled) {
             }));
       }));
 }
-
-function getContinueUrl(callback) {
-  chrome.test.getConfig(function(config) {
-    callback('http://www.example.com:PORT/continue'
-                 .replace(/PORT/, config.spawnedTestServer.port));
-  });
-}
-
-function expectSignInFailure(error, forced_continue_url) {
-  getContinueUrl(function(continue_url) {
-    if (forced_continue_url !== undefined)
-      continue_url = forced_continue_url;
-
-    chrome.test.runWithUserGesture(function() {
-      chrome.webstorePrivate.signIn(continue_url, callbackFail(error));
-    });
-  });
-}
-
-function expectUserIsAlreadySignedIn() {
-  getContinueUrl(function(continue_url) {
-    chrome.test.runWithUserGesture(function() {
-      chrome.webstorePrivate.signIn(continue_url, callbackPass());
-    });
-  });
-}