[Sync] Switch to using GoogleAuthUtil.clearToken().

sync/test/android/javatests/src/org/chromium/sync/test/util/MockAccountManager.java

Index: sync/test/android/javatests/src/org/chromium/sync/test/util/MockAccountManager.java
diff --git a/sync/test/android/javatests/src/org/chromium/sync/test/util/MockAccountManager.java b/sync/test/android/javatests/src/org/chromium/sync/test/util/MockAccountManager.java
index 2b6e6a1add792f1f5e43ee818c71e9d5aadba7ae..d3421dc7c227a23615ece573d1038141db764d4b 100644
--- a/sync/test/android/javatests/src/org/chromium/sync/test/util/MockAccountManager.java
+++ b/sync/test/android/javatests/src/org/chromium/sync/test/util/MockAccountManager.java
@@ -179,10 +179,7 @@ public class MockAccountManager implements AccountManagerDelegate {
     }
 
     @Override
-    public void invalidateAuthToken(String accountScope, String authToken) {
-        if (!AccountManagerHelper.GOOGLE_ACCOUNT_TYPE.equals(accountScope)) {
-            throw new IllegalArgumentException("Invalid account type: " + accountScope);
-        }
+    public void invalidateAuthToken(String authToken) {
         if (authToken == null) {
             throw new IllegalArgumentException("AuthToken can not be null");
         }