fix optimizing gtests

Change-Id: I207398d8a65482650fba87db12a3b51e8b114694
diff --git a/compiler/optimizing/constant_folding_test.cc b/compiler/optimizing/constant_folding_test.cc
index 02ad675..e420a62 100644
--- a/compiler/optimizing/constant_folding_test.cc
+++ b/compiler/optimizing/constant_folding_test.cc
@@ -62,7 +62,7 @@
 
   check_after_cf(graph);
 
-  HDeadCodeElimination(graph).Run();
+  HDeadCodeElimination(graph, nullptr).Run();
   SSAChecker ssa_checker_dce(&allocator, graph);
   ssa_checker_dce.Run();
   ASSERT_TRUE(ssa_checker_dce.IsValid());
diff --git a/compiler/optimizing/dead_code_elimination_test.cc b/compiler/optimizing/dead_code_elimination_test.cc
index 98ae1ec..6350019 100644
--- a/compiler/optimizing/dead_code_elimination_test.cc
+++ b/compiler/optimizing/dead_code_elimination_test.cc
@@ -44,7 +44,7 @@
   std::unique_ptr<const X86InstructionSetFeatures> features_x86(
       X86InstructionSetFeatures::FromCppDefines());
   x86::CodeGeneratorX86 codegenX86(graph, *features_x86.get(), CompilerOptions());
-  HDeadCodeElimination(graph).Run();
+  HDeadCodeElimination(graph, nullptr).Run();
   SSAChecker ssa_checker(&allocator, graph);
   ssa_checker.Run();
   ASSERT_TRUE(ssa_checker.IsValid());