Allow root level requests in the vm service.

runtime/vm/json_stream.h

 // Copyright (c) 2013, 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.
 
 #ifndef VM_JSON_STREAM_H_
 #define VM_JSON_STREAM_H_
 
+#include "include/dart_api.h"  // for Dart_Port
 #include "platform/json.h"
 #include "vm/allocation.h"
 
 namespace dart {
 
 class Field;
 class Instance;
 class JSONArray;
 class JSONObject;
 class Object;
 class SourceBreakpoint;
 
 class JSONStream : ValueObject {
  public:
   explicit JSONStream(intptr_t buf_size = 256);
   ~JSONStream();
 
   TextBuffer* buffer() { return &buffer_; }
   const char* ToCString() { return buffer_.buf(); }
 
+  void set_reply_port(Dart_Port port);
   void SetArguments(const char** arguments, intptr_t num_arguments);
   void SetOptions(const char** option_keys, const char** option_values,
                   intptr_t num_options);
 
+  Dart_Port reply_port() const { return reply_port_; }
+
   intptr_t num_arguments() const { return num_arguments_; }
   const char* GetArgument(intptr_t i) const {
     return arguments_[i];
   }
   intptr_t num_options() const { return num_options_; }
   const char* GetOptionKey(intptr_t i) const {
     return option_keys_[i];
   }
   const char* GetOptionValue(intptr_t i) const {
     return option_values_[i];
@@ skipping 28 matching lines @@
   void PrintProperty(const char* name, const Object& o, bool ref = true);
 
   void PrintPropertyName(const char* name);
   void PrintCommaIfNeeded();
   bool NeedComma();
 
   intptr_t nesting_level() const { return open_objects_; }
 
   intptr_t open_objects_;
   TextBuffer buffer_;
+  Dart_Port reply_port_;
   const char** arguments_;
   intptr_t num_arguments_;
   const char** option_keys_;
   const char** option_values_;
   intptr_t num_options_;
 
   friend class JSONObject;
   friend class JSONArray;
 };
 
@@ skipping 78 matching lines @@
 
   friend class JSONObject;
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(JSONArray);
 };
 
 }  // namespace dart
 
 #endif  // VM_JSON_STREAM_H_