Refactor how we report reload results

runtime/vm/isolate_reload.h

 // Copyright (c) 2016, 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_ISOLATE_RELOAD_H_
 #define VM_ISOLATE_RELOAD_H_
 
 #include "include/dart_tools_api.h"
 
 #include "vm/hash_map.h"
@@ skipping 112 matching lines @@
   void AppendTo(JSONArray* array);
 
  protected:
   const Class& from_;
   const Class& to_;
 };
 
 
 class IsolateReloadContext {
  public:
-  explicit IsolateReloadContext(Isolate* isolate);
+  explicit IsolateReloadContext(Isolate* isolate, JSONStream* js);
   ~IsolateReloadContext();
 
   void StartReload(bool force_reload);
   void FinishReload();
   void AbortReload(const Error& error);
 
   RawLibrary* saved_root_library() const;
 
   RawGrowableObjectArray* saved_libraries() const;
 
@@ skipping 101 matching lines @@
   // atomic_install:
   void MarkAllFunctionsForRecompilation();
   void ResetUnoptimizedICsOnStack();
   void ResetMegamorphicCaches();
   void InvalidateWorld();
 
   int64_t start_time_micros_;
   int64_t reload_timestamp_;
   Isolate* isolate_;
   bool reload_skipped_;
+  JSONStream* js_;
 
   intptr_t saved_num_cids_;
   RawClass** saved_class_table_;
   intptr_t num_saved_libs_;
 
   // Collect the necessary instance transformation for schema changes.
   ZoneGrowableArray<InstanceMorpher*> instance_morphers_;
 
   // Collects the reasons for cancelling the reload.
   ZoneGrowableArray<ReasonForCancelling*> reasons_to_cancel_reload_;
@@ skipping 58 matching lines @@
   friend class Isolate;
   friend class Class;  // AddStaticFieldMapping, AddEnumBecomeMapping.
   friend class ObjectLocator;
 
   static Dart_FileModifiedCallback file_modified_callback_;
 };
 
 }  // namespace dart
 
 #endif   // VM_ISOLATE_RELOAD_H_