[test] Test expectations in cctest should use CHECK and not DCHECK.

test/cctest/compiler/test-instruction.cc

Index: test/cctest/compiler/test-instruction.cc
diff --git a/test/cctest/compiler/test-instruction.cc b/test/cctest/compiler/test-instruction.cc
index 53562953eee46e3aedd52fd032b587bbefd05af2..a1bd2686edbdcda922eff7130feca5d4116696f5 100644
--- a/test/cctest/compiler/test-instruction.cc
+++ b/test/cctest/compiler/test-instruction.cc
@@ -46,7 +46,7 @@ class InstructionTester : public HandleAndZoneScope {
     if (schedule.rpo_order()->size() == 0) {
       // Compute the RPO order.
       Scheduler::ComputeSpecialRPO(main_zone(), &schedule);
-      DCHECK(schedule.rpo_order()->size() > 0);
+      CHECK_NE(0u, schedule.rpo_order()->size());
     }
     InstructionBlocks* instruction_blocks =
         TestInstrSeq::InstructionBlocksFor(main_zone(), &schedule);