Fix some service protocol isolate lifecycle races

runtime/vm/service_event.cc

 // Copyright (c) 2015, 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/service_event.h"
 
 #include "vm/message_handler.h"
 
 namespace dart {
 
@@ skipping 97 matching lines @@
     case kPauseStart:
       return "PauseStart";
     case kPauseExit:
       return "PauseExit";
     case kPauseBreakpoint:
       return "PauseBreakpoint";
     case kPauseInterrupted:
       return "PauseInterrupted";
     case kPauseException:
       return "PauseException";
+    case kNone:
+      return "None";
     case kResume:
       return "Resume";
     case kBreakpointAdded:
       return "BreakpointAdded";
     case kBreakpointResolved:
       return "BreakpointResolved";
     case kBreakpointRemoved:
       return "BreakpointRemoved";
     case kGC:
       return "GC";  // TODO(koda): Change to GarbageCollected.
@@ skipping 26 matching lines @@
     case kIsolateExit:
     case kIsolateUpdate:
     case kServiceExtensionAdded:
       return Service::isolate_stream.id();
 
     case kPauseStart:
     case kPauseExit:
     case kPauseBreakpoint:
     case kPauseInterrupted:
     case kPauseException:
+    case kNone:
     case kResume:
     case kBreakpointAdded:
     case kBreakpointResolved:
     case kBreakpointRemoved:
     case kInspect:
     case kDebuggerSettingsUpdate:
       return Service::debug_stream.id();
 
     case kGC:
       return Service::gc_stream.id();
@@ skipping 92 matching lines @@
   } else {
     jsobj->AddProperty("isolate", isolate());
   }
   ASSERT(timestamp_ != -1);
   jsobj->AddPropertyTimeMillis("timestamp", timestamp_);
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart