Remove the dependency of Zone on Isolate

src/rewriter.cc

Index: src/rewriter.cc
diff --git a/src/rewriter.cc b/src/rewriter.cc
index c52051aba367d2a4ac7299353ccbf586d7a87c4e..66961278a76f0161e5152b7f5ce10aea7efc22b5 100644
--- a/src/rewriter.cc
+++ b/src/rewriter.cc
@@ -15,13 +15,14 @@ namespace internal {
 
 class Processor: public AstVisitor {
  public:
-  Processor(Variable* result, AstValueFactory* ast_value_factory)
+  Processor(Isolate* isolate, Variable* result,
+            AstValueFactory* ast_value_factory)
       : result_(result),
         result_assigned_(false),
         is_set_(false),
         in_try_(false),
         factory_(ast_value_factory) {
-    InitializeAstVisitor(ast_value_factory->zone());
+    InitializeAstVisitor(isolate, ast_value_factory->zone());
   }
 
   virtual ~Processor() { }
@@ -235,7 +236,7 @@ bool Rewriter::Rewrite(CompilationInfo* info) {
         scope->NewTemporary(info->ast_value_factory()->dot_result_string());
     // The name string must be internalized at this point.
     DCHECK(!result->name().is_null());
-    Processor processor(result, info->ast_value_factory());
+    Processor processor(info->isolate(), result, info->ast_value_factory());
     processor.Process(body);
     if (processor.HasStackOverflow()) return false;