ART: Refactor run-test 912 (2/3)

Move the refactored run-test into place.

Bug: 32072923
Test: m
Change-Id: I170cd1465a3afce3f48a9cbad864eaa5d9fdaacc
diff --git a/test/912-classes/src/Main.java b/test/912-classes/src/art/Test912.java
similarity index 100%
rename from test/912-classes/src/Main.java
rename to test/912-classes/src/art/Test912.java