Remove the dependency of Zone on Isolate

test/unittests/compiler/machine-operator-reducer-unittest.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/machine-operator-reducer.h"
 #include "src/compiler/typer.h"
 #include "test/unittests/compiler/graph-unittest.h"
@@ skipping 10 matching lines @@
 namespace compiler {
 
 class MachineOperatorReducerTest : public TypedGraphTest {
  public:
   explicit MachineOperatorReducerTest(int num_parameters = 2)
       : TypedGraphTest(num_parameters), machine_(zone()) {}
 
  protected:
   Reduction Reduce(Node* node) {
     JSOperatorBuilder javascript(zone());
-    JSGraph jsgraph(graph(), common(), &javascript, &machine_);
+    JSGraph jsgraph(isolate(), graph(), common(), &javascript, &machine_);
     MachineOperatorReducer reducer(&jsgraph);
     return reducer.Reduce(node);
   }
 
   Matcher<Node*> IsTruncatingDiv(const Matcher<Node*>& dividend_matcher,
                                  const int32_t divisor) {
     base::MagicNumbersForDivision<uint32_t> const mag =
         base::SignedDivisionByConstant(bit_cast<uint32_t>(divisor));
     int32_t const multiplier = bit_cast<int32_t>(mag.multiplier);
     int32_t const shift = bit_cast<int32_t>(mag.shift);
@@ skipping 1375 matching lines @@
     Reduction r = Reduce(node);
     ASSERT_TRUE(r.Changed());
     EXPECT_THAT(r.replacement(),
                 IsStore(rep, base, index, value, effect, control));
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8