Remove unused Zone argument from InitializeAstVisitor

test/cctest/test-asm-validator.cc

 // Copyright 2015 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/ast.h"
 #include "src/ast-expression-visitor.h"
 #include "src/parser.h"
 #include "src/rewriter.h"
@@ skipping 49 matching lines @@
   info.set_lazy(false);
   info.set_allow_lazy_parsing(false);
   info.set_toplevel(true);
 
   CHECK(i::Compiler::ParseAndAnalyze(&info));
 
   FunctionLiteral* root =
       info.scope()->declarations()->at(0)->AsFunctionDeclaration()->fun();
   AsmTyper typer(isolate, zone, *script, root);
   if (typer.Validate()) {
-    ExpressionTypeCollector(isolate, zone, root, types).Run();
+    ExpressionTypeCollector(isolate, root, types).Run();
     return "";
   } else {
     return typer.error_message();
   }
 }
 
 }  // namespace
 
 
 TEST(ValidateMinimum) {
@@ skipping 826 matching lines @@
   "return {foo: foo, bar: 1};"
   "}\n";
 
   v8::V8::Initialize();
   HandleAndZoneScope handles;
   Zone* zone = handles.main_zone();
   ZoneVector<ExpressionTypeEntry> types(zone);
   CHECK_EQ("asm: line 40: non-function in function table\n",
            Validate(zone, test_function, &types));
 }