Remove the dependency of Zone on Isolate

test/cctest/compiler/test-machine-operator-reducer.cc

Index: test/cctest/compiler/test-machine-operator-reducer.cc
diff --git a/test/cctest/compiler/test-machine-operator-reducer.cc b/test/cctest/compiler/test-machine-operator-reducer.cc
index e582f26d70da7e69a66be51a628212da6bb2439e..c46045635d2354eb88cabdbded9e3ce7c1c9be9e 100644
--- a/test/cctest/compiler/test-machine-operator-reducer.cc
+++ b/test/cctest/compiler/test-machine-operator-reducer.cc
@@ -61,8 +61,8 @@ class ReducerTester : public HandleAndZoneScope {
         common(main_zone()),
         graph(main_zone()),
         javascript(main_zone()),
-        typer(&graph, MaybeHandle<Context>()),
-        jsgraph(&graph, &common, &javascript, &machine),
+        typer(isolate, &graph, MaybeHandle<Context>()),
+        jsgraph(isolate, &graph, &common, &javascript, &machine),
         maxuint32(Constant<int32_t>(kMaxUInt32)) {
     Node* s = graph.NewNode(common.Start(num_parameters));
     graph.SetStart(s);