Fix AccountManagerTest#testHasFeatureWithCallback

Bug 3097462

Mark testHasFeatureWithCallback as private, since its not a test.
CTS was picking it up as a test and trying to run it but failing
because that method takes a parameter.

Change-Id: Ie90ae033748ef90ff293bd73f962d3087a2975c6
diff --git a/tests/tests/accounts/src/android/accounts/cts/AccountManagerTest.java b/tests/tests/accounts/src/android/accounts/cts/AccountManagerTest.java
index 1a857ea..e72e4db 100644
--- a/tests/tests/accounts/src/android/accounts/cts/AccountManagerTest.java
+++ b/tests/tests/accounts/src/android/accounts/cts/AccountManagerTest.java
@@ -1171,14 +1171,14 @@
     public void testHasFeature()
             throws IOException, AuthenticatorException, OperationCanceledException {
 
-        testHasFeature(null /* handler */);
-        testHasFeature(new Handler());
+        assertHasFeature(null /* handler */);
+        assertHasFeature(new Handler());
 
-        testHasFeatureWithCallback(null /* handler */);
-        testHasFeatureWithCallback(new Handler());
+        assertHasFeatureWithCallback(null /* handler */);
+        assertHasFeatureWithCallback(new Handler());
     }
 
-    public void testHasFeature(Handler handler)
+    private void assertHasFeature(Handler handler)
             throws IOException, AuthenticatorException, OperationCanceledException {
         Bundle resultBundle = addAccount(am,
                 ACCOUNT_TYPE,
@@ -1269,7 +1269,7 @@
         }
     }
 
-    public void testHasFeatureWithCallback(Handler handler)
+    private void assertHasFeatureWithCallback(Handler handler)
             throws IOException, AuthenticatorException, OperationCanceledException {
         Bundle resultBundle = addAccount(am,
                 ACCOUNT_TYPE,