Remove the dependency of Zone on Isolate

src/deoptimizer.cc

 // Copyright 2013 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/v8.h"
 
 #include "src/accessors.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/disasm.h"
@@ skipping 349 matching lines @@
       if (topmost_optimized_code == NULL) {
         topmost_optimized_code = code;
         safe_to_deopt_topmost_optimized_code = safe_to_deopt;
       }
     }
   }
 #endif
 
   // Move marked code from the optimized code list to the deoptimized
   // code list, collecting them into a ZoneList.
-  Zone zone(isolate);
+  Zone zone;
   ZoneList<Code*> codes(10, &zone);
 
   // Walk over all optimized code objects in this native context.
   Code* prev = NULL;
   Object* element = context->OptimizedCodeListHead();
   while (!element->IsUndefined()) {
     Code* code = Code::cast(element);
     CHECK_EQ(code->kind(), Code::OPTIMIZED_FUNCTION);
     Object* next = code->next_code_link();
 
@@ skipping 3241 matching lines @@
 
 
 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) {
   v->VisitPointer(bit_cast<Object**>(&function_));
   v->VisitPointer(&context_);
   v->VisitPointers(parameters_, parameters_ + parameters_count_);
   v->VisitPointers(expression_stack_, expression_stack_ + expression_count_);
 }
 
 } }  // namespace v8::internal