privatize and remove some fields in Isolate response

runtime/vm/isolate.cc

 // 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.
 
 #include "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "vm/code_observers.h"
@@ skipping 1494 matching lines @@
   IsolateSpawnState* state = spawn_state();
   if (state != NULL) {
     const Object& entry = Object::Handle(this, state->ResolveFunction());
     if (!entry.IsNull() && entry.IsFunction()) {
       Function& func = Function::Handle(this);
       func ^= entry.raw();
       jsobj.AddProperty("entry", func);
     }
   }
   {
-    JSONObject jsheap(&jsobj, "heaps");
+    JSONObject jsheap(&jsobj, "_heaps");
     heap()->PrintToJSONObject(Heap::kNew, &jsheap);
     heap()->PrintToJSONObject(Heap::kOld, &jsheap);
   }
 
   jsobj.AddProperty("livePorts", message_handler()->live_ports());
   jsobj.AddProperty("pauseOnExit", message_handler()->pause_on_exit());
 
   if (message_handler()->paused_on_start()) {
     ASSERT(debugger()->PauseEvent() == NULL);
     ServiceEvent pause_event(this, ServiceEvent::kPauseStart);
@@ skipping 15 matching lines @@
     }
     jsobj.AddProperty("pauseEvent", &pause_event);
   }
 
   const Library& lib =
       Library::Handle(object_store()->root_library());
   jsobj.AddProperty("rootLib", lib);
 
   timer_list().PrintTimersToJSONProperty(&jsobj);
   {
-    JSONObject tagCounters(&jsobj, "tagCounters");
+    JSONObject tagCounters(&jsobj, "_tagCounters");
     vm_tag_counters()->PrintToJSONObject(&tagCounters);
   }
   if (object_store()->sticky_error() != Object::null()) {
     Error& error = Error::Handle(this, object_store()->sticky_error());
     ASSERT(!error.IsNull());
     jsobj.AddProperty("error", error, false);
   }
 
-  bool is_io_enabled = false;
   {
     const GrowableObjectArray& libs =
         GrowableObjectArray::Handle(object_store()->libraries());
     intptr_t num_libs = libs.Length();
     Library& lib = Library::Handle();
-    String& name = String::Handle();
 
     JSONArray lib_array(&jsobj, "libraries");
     for (intptr_t i = 0; i < num_libs; i++) {
       lib ^= libs.At(i);
-      name = lib.name();
-      if (name.Equals(Symbols::DartIOLibName())) {
-        is_io_enabled = true;
-      }
       ASSERT(!lib.IsNull());
       lib_array.AddValue(lib);
     }
   }
   {
     JSONArray breakpoints(&jsobj, "breakpoints");
     debugger()->PrintBreakpointsToJSONArray(&breakpoints);
   }
-  {
-    JSONArray features_array(&jsobj, "features");
-    if (is_io_enabled) {
-      features_array.AddValue("io");
-    }
-  }
 }
 
 
 intptr_t Isolate::ProfileInterrupt() {
   // Other threads might be modifying these fields. Save them in locals so that
   // we can at least trust the NULL check.
   IsolateProfilerData* prof_data = profiler_data();
   if (prof_data == NULL) {
     // Profiler not setup for isolate.
     return 0;
@@ skipping 370 matching lines @@
                            serialized_message_, serialized_message_len_);
 }
 
 
 void IsolateSpawnState::Cleanup() {
   SwitchIsolateScope switch_scope(I);
   Dart::ShutdownIsolate();
 }
 
 }  // namespace dart