Remove the dependency of Zone on Isolate

test/unittests/compiler/instruction-selector-unittest.h

Index: test/unittests/compiler/instruction-selector-unittest.h
diff --git a/test/unittests/compiler/instruction-selector-unittest.h b/test/unittests/compiler/instruction-selector-unittest.h
index e65d68bcca885b2a8fc0145f2c07897d189ffa34..408f32611aae59d68b3655050a946bdf36adbd99 100644
--- a/test/unittests/compiler/instruction-selector-unittest.h
+++ b/test/unittests/compiler/instruction-selector-unittest.h
@@ -36,19 +36,20 @@ class InstructionSelectorTest : public TestWithContext, public TestWithZone {
   class StreamBuilder FINAL : public RawMachineAssembler {
    public:
     StreamBuilder(InstructionSelectorTest* test, MachineType return_type)
-        : RawMachineAssembler(new (test->zone()) Graph(test->zone()),
+        : RawMachineAssembler(test->isolate(),
+                              new (test->zone()) Graph(test->zone()),
                               MakeMachineSignature(test->zone(), return_type)),
           test_(test) {}
     StreamBuilder(InstructionSelectorTest* test, MachineType return_type,
                   MachineType parameter0_type)
         : RawMachineAssembler(
-              new (test->zone()) Graph(test->zone()),
+              test->isolate(), new (test->zone()) Graph(test->zone()),
               MakeMachineSignature(test->zone(), return_type, parameter0_type)),
           test_(test) {}
     StreamBuilder(InstructionSelectorTest* test, MachineType return_type,
                   MachineType parameter0_type, MachineType parameter1_type)
         : RawMachineAssembler(
-              new (test->zone()) Graph(test->zone()),
+              test->isolate(), new (test->zone()) Graph(test->zone()),
               MakeMachineSignature(test->zone(), return_type, parameter0_type,
                                    parameter1_type)),
           test_(test) {}
@@ -56,7 +57,7 @@ class InstructionSelectorTest : public TestWithContext, public TestWithZone {
                   MachineType parameter0_type, MachineType parameter1_type,
                   MachineType parameter2_type)
         : RawMachineAssembler(
-              new (test->zone()) Graph(test->zone()),
+              test->isolate(), new (test->zone()) Graph(test->zone()),
               MakeMachineSignature(test->zone(), return_type, parameter0_type,
                                    parameter1_type, parameter2_type)),
           test_(test) {}