Remove unused Zone argument from InitializeAstVisitor

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/compiler.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(info->isolate(), zone);
+    : info_(info), zone_(zone), loop_stack_(zone) {
+  InitializeAstVisitor(info->isolate());
 }
 
 
 LoopAssignmentAnalysis* ALAA::Analyze() {
-  LoopAssignmentAnalysis* a = new (zone()) LoopAssignmentAnalysis(zone());
+  LoopAssignmentAnalysis* a = new (zone_) LoopAssignmentAnalysis(zone_);
   result_ = a;
   VisitStatements(info()->literal()->body());
   result_ = NULL;
   return a;
 }
 
 
 void ALAA::Enter(IterationStatement* loop) {
   int num_variables = 1 + info()->scope()->num_parameters() +
                       info()->scope()->num_stack_slots();
-  BitVector* bits = new (zone()) BitVector(num_variables, zone());
+  BitVector* bits = new (zone_) BitVector(num_variables, zone_);
   if (info()->is_osr() && info()->osr_ast_id() == loop->OsrEntryId())
     bits->AddAll();
   loop_stack_.push_back(bits);
 }
 
 
 void ALAA::Exit(IterationStatement* loop) {
   DCHECK(loop_stack_.size() > 0);
   BitVector* bits = loop_stack_.back();
   loop_stack_.pop_back();
@@ skipping 254 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 compiler
 }  // namespace internal
 }  // namespace v8