Remove the dependency of Zone on Isolate

src/compiler/ast-loop-assignment-analyzer.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/compiler/ast-loop-assignment-analyzer.h"
 #include "src/parser.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 typedef class AstLoopAssignmentAnalyzer ALAA;  // for code shortitude.
 
 ALAA::AstLoopAssignmentAnalyzer(Zone* zone, CompilationInfo* info)
     : info_(info), loop_stack_(zone) {
-  InitializeAstVisitor(zone);
+  InitializeAstVisitor(info->isolate(), zone);
 }
 
 
 LoopAssignmentAnalysis* ALAA::Analyze() {
   LoopAssignmentAnalysis* a = new (zone()) LoopAssignmentAnalysis(zone());
   result_ = a;
   VisitStatements(info()->function()->body());
   result_ = NULL;
   return a;
 }
@@ skipping 269 matching lines @@
   int count = 0;
   int var_index = AstLoopAssignmentAnalyzer::GetVariableIndex(scope, var);
   for (size_t i = 0; i < list_.size(); i++) {
     if (list_[i].second->Contains(var_index)) count++;
   }
   return count;
 }
 }
 }
 }  // namespace v8::internal::compiler