Add --parse-all option in order to benchmark and measure the scanner/parser performance.

runtime/vm/ast_printer_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/assert.h"
 #include "vm/ast_printer.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 #ifndef PRODUCT
 
 TEST_CASE(AstPrinter) {
   const TokenPosition kPos = TokenPosition::kNoSource;
   LocalVariable* v =
       new LocalVariable(kPos,
                         String::ZoneHandle(Symbols::New(thread, "wurscht")),
                         Type::ZoneHandle(Type::DynamicType()));
   v->set_index(5);
+  AstPrinter ast_printer;
   LoadLocalNode* ll = new LoadLocalNode(kPos, v);
   ReturnNode* r = new ReturnNode(kPos, ll);
-  AstPrinter::PrintNode(r);
+  ast_printer.PrintNode(r);
 
   AstNode* l = new LiteralNode(kPos, Smi::ZoneHandle(Smi::New(3)));
   ReturnNode* rl = new ReturnNode(kPos, l);
-  AstPrinter::PrintNode(rl);
+  ast_printer.PrintNode(rl);
 
-  AstPrinter::PrintNode(new ReturnNode(kPos));
+  ast_printer.PrintNode(new ReturnNode(kPos));
 
-  AstPrinter::PrintNode(new BinaryOpNode(kPos,
-                          Token::kADD,
-                          new LiteralNode(kPos, Smi::ZoneHandle(Smi::New(3))),
-                          new LiteralNode(kPos, Smi::ZoneHandle(Smi::New(5)))));
-  AstPrinter::PrintNode(new UnaryOpNode(kPos, Token::kNEGATE, ll));
+  ast_printer.PrintNode(new BinaryOpNode(kPos,
+                        Token::kADD,
+                        new LiteralNode(kPos, Smi::ZoneHandle(Smi::New(3))),
+                        new LiteralNode(kPos, Smi::ZoneHandle(Smi::New(5)))));
+  ast_printer.PrintNode(new UnaryOpNode(kPos, Token::kNEGATE, ll));
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart