Eliminate GrowableTokenStream

runtime/vm/snapshot_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/globals.h"
 
 #include "include/dart_tools_api.h"
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
@@ skipping 851 matching lines @@
   const TokenStream& expected_tokens =
       TokenStream::Handle(zone, script.tokens());
   TokenStream::Iterator expected_iterator(
       zone,
       expected_tokens,
       TokenPosition::kMinSource,
       TokenStream::Iterator::kAllTokens);
   const String& str = String::Handle(zone, expected_tokens.GenerateSource());
   const String& private_key =
       String::Handle(zone, expected_tokens.PrivateKey());
-  Scanner scanner(str, private_key);
   const TokenStream& reconstructed_tokens =
-      TokenStream::Handle(zone, TokenStream::New(scanner.GetStream(),
+      TokenStream::Handle(zone, TokenStream::New(str,
                                                  private_key,
                                                  false));
   expected_iterator.SetCurrentPosition(TokenPosition::kMinSource);
   TokenStream::Iterator reconstructed_iterator(
       zone,
       reconstructed_tokens,
       TokenPosition::kMinSource,
       TokenStream::Iterator::kAllTokens);
   Token::Kind expected_kind = expected_iterator.CurrentTokenKind();
   Token::Kind reconstructed_kind = reconstructed_iterator.CurrentTokenKind();
@@ skipping 2129 matching lines @@
   StackZone zone(Thread::Current());
   uint8_t* buffer;
   MessageWriter writer(&buffer, &zone_allocator, true);
   writer.WriteInlinedObjectHeader(kOmittedObjectId);
   // For performance, we'd like single-byte headers when ids are omitted.
   // If this starts failing, consider renumbering the snapshot ids.
   EXPECT_EQ(1, writer.BytesWritten());
 }
 
 }  // namespace dart