Replace SortedStringKeys with SortedKeys

Now that we have generics.

Bug: 193460475
Test: presubmits
Change-Id: I1594fd8feb505175d5c09c03ef397e5ffd5b09cb
diff --git a/cc/cc_test.go b/cc/cc_test.go
index 0d03b73..b02e037 100644
--- a/cc/cc_test.go
+++ b/cc/cc_test.go
@@ -3930,7 +3930,7 @@
 
 func assertMapKeys(t *testing.T, m map[string]string, expected []string) {
 	t.Helper()
-	assertArrayString(t, android.SortedStringKeys(m), expected)
+	assertArrayString(t, android.SortedKeys(m), expected)
 }
 
 func TestDefaults(t *testing.T) {