Mark DWARF lines in non-debuggable methods as "not a statement".

This is a hint to the debugger that breakpoints and stepping
might not function as intended (since we have limited information).

Change-Id: I23c4a816182cc7548fcd69fbd00112225e7b1710
diff --git a/compiler/debug/dwarf/dwarf_test.cc b/compiler/debug/dwarf/dwarf_test.cc
index e455d0d..2ba3af5 100644
--- a/compiler/debug/dwarf/dwarf_test.cc
+++ b/compiler/debug/dwarf/dwarf_test.cc
@@ -217,7 +217,9 @@
   DW_CHECK_NEXT("Advance Line by 2 to 3");
   opcodes.SetColumn(4);
   DW_CHECK_NEXT("Set column to 4");
-  opcodes.NegateStmt();
+  opcodes.SetIsStmt(true);
+  DW_CHECK_NEXT("Set is_stmt to 1");
+  opcodes.SetIsStmt(false);
   DW_CHECK_NEXT("Set is_stmt to 0");
   opcodes.SetBasicBlock();
   DW_CHECK_NEXT("Set basic block");