Replace is_interactive with interactive for consistency in the code.

Bug: none
Test: unittests
Change-Id: I8c98860cfeadb52c7f8e4931d2ad154ae4211d47
diff --git a/update_attempter_unittest.cc b/update_attempter_unittest.cc
index 240e4ec..4677d31 100644
--- a/update_attempter_unittest.cc
+++ b/update_attempter_unittest.cc
@@ -204,7 +204,7 @@
                         nullptr,
                         nullptr,
                         fetcher.release(),
-                        false /* is_interactive */);
+                        false /* interactive */);
   EXPECT_CALL(*prefs_, GetInt64(kPrefsDeltaUpdateFailures, _)).Times(0);
   attempter_.ActionCompleted(nullptr, &action, ErrorCode::kSuccess);
   EXPECT_EQ(UpdateStatus::FINALIZING, attempter_.status());