Include an empty breakpoints list on the Isolate response when the debugger is disabled.

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 "include/dart_native_api.h"
 #include "platform/assert.h"
 #include "platform/text_buffer.h"
@@ skipping 1978 matching lines @@
     Library& lib = Library::Handle();
 
     JSONArray lib_array(&jsobj, "libraries");
     for (intptr_t i = 0; i < num_libs; i++) {
       lib ^= libs.At(i);
       ASSERT(!lib.IsNull());
       lib_array.AddValue(lib);
     }
   }
 
+  {
+    JSONArray breakpoints(&jsobj, "breakpoints");
+    if (debugger() != NULL) {
+      debugger()->PrintBreakpointsToJSONArray(&breakpoints);
+    }
+  }
+
   if (debugger() != NULL) {
-    {
-      JSONArray breakpoints(&jsobj, "breakpoints");
-      debugger()->PrintBreakpointsToJSONArray(&breakpoints);
-    }
-
-    {
-      JSONObject jssettings(&jsobj, "_debuggerSettings");
-      debugger()->PrintSettingsToJSONObject(&jssettings);
-    }
+    JSONObject jssettings(&jsobj, "_debuggerSettings");
+    debugger()->PrintSettingsToJSONObject(&jssettings);
   }
 
   {
     GrowableObjectArray& handlers =
         GrowableObjectArray::Handle(registered_service_extension_handlers());
     if (!handlers.IsNull()) {
       JSONArray extensions(&jsobj, "extensionRPCs");
       String& handler_name = String::Handle();
       for (intptr_t i = 0; i < handlers.Length(); i += kRegisteredEntrySize) {
         handler_name ^= handlers.At(i + kRegisteredNameIndex);
@@ skipping 857 matching lines @@
 void IsolateSpawnState::DecrementSpawnCount() {
   ASSERT(spawn_count_monitor_ != NULL);
   ASSERT(spawn_count_ != NULL);
   MonitorLocker ml(spawn_count_monitor_);
   ASSERT(*spawn_count_ > 0);
   *spawn_count_ = *spawn_count_ - 1;
   ml.Notify();
 }
 
 }  // namespace dart