[parser/ast] Reduce memory consumption for AstConsString.

src/parsing/func-name-inferrer.cc

 // Copyright 2011 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/parsing/func-name-inferrer.h"
 
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/ast.h"
 #include "src/list-inl.h"
 #include "src/objects-inl.h"
@@ skipping 46 matching lines @@
   AstConsString* result = ast_value_factory_->NewConsString();
   for (int pos = 0; pos < names_stack_.length(); pos++) {
     // Skip consecutive variable declarations.
     if (pos + 1 < names_stack_.length() &&
         names_stack_.at(pos).type == kVariableName &&
         names_stack_.at(pos + 1).type == kVariableName) {
       continue;
     }
     // Add name. Separate names with ".".
     if (!result->IsEmpty()) {
-      result->AddString(ast_value_factory_->dot_string());
+      result->AddString(zone(), ast_value_factory_->dot_string());
     }
-    result->AddString(names_stack_.at(pos).name);
+    result->AddString(zone(), names_stack_.at(pos).name);
   }
   return result;
 }
 
 void FuncNameInferrer::InferFunctionsNames() {
   const AstConsString* func_name = MakeNameFromStack();
   for (int i = 0; i < funcs_to_infer_.length(); ++i) {
     funcs_to_infer_[i]->set_raw_inferred_name(func_name);
   }
   funcs_to_infer_.Rewind(0);
 }
 
 
 }  // namespace internal
 }  // namespace v8