Replace is_interactive with interactive for consistency in the code.

Bug: none
Test: unittests
Change-Id: I8c98860cfeadb52c7f8e4931d2ad154ae4211d47
diff --git a/update_attempter_android.cc b/update_attempter_android.cc
index 5ee0584..4ec58d0 100644
--- a/update_attempter_android.cc
+++ b/update_attempter_android.cc
@@ -535,7 +535,7 @@
                          hardware_,
                          nullptr,           // system_state, not used.
                          download_fetcher,  // passes ownership
-                         true /* is_interactive */));
+                         true /* interactive */));
   shared_ptr<FilesystemVerifierAction> filesystem_verifier_action(
       new FilesystemVerifierAction());