Added task kind field to thread JSON output.

runtime/vm/thread_test.cc

 // Copyright (c) 2012, 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 "platform/assert.h"
 #include "vm/isolate.h"
 #include "vm/lockers.h"
 #include "vm/unit_test.h"
 #include "vm/profiler.h"
 #include "vm/safepoint.h"
@@ skipping 325 matching lines @@
                       "\"type\":\"_Zone\","
                       "\"capacity\":%" Pd
                       ","
                       "\"used\":%" Pd "",
                       top_zone->SizeInBytes(), top_zone->UsedSizeInBytes());
       EXPECT_SUBSTRING(zone_info_buf, json);
       top_zone = top_zone->previous();
     }
 
     // Check the thread exists and is the correct size.
-    char* thread_info_buf = OS::SCreate(
-        current_zone,
-        "\"type\":\"_Thread\","
-        "\"id\":\"threads\\/%" Pd "",
-        OSThread::ThreadIdToIntPtr(thread->os_thread()->trace_id()));
+    char* thread_info_buf =
+        OS::SCreate(current_zone,
+                    "\"type\":\"_Thread\","
+                    "\"id\":\"threads\\/%" Pd
+                    "\","
+                    "\"kind\":\"%s\"",
+                    OSThread::ThreadIdToIntPtr(thread->os_thread()->trace_id()),
+                    Thread::TaskKindToCString(thread->task_kind()));
 
     EXPECT_SUBSTRING(thread_info_buf, json);
   }
 
   // Unblock the tasks so they can finish.
   {
     MonitorLocker sync_ml(&sync);
     wait = false;
     sync_ml.NotifyAll();
   }
@@ skipping 428 matching lines @@
       TransitionVMToBlocked transition(thread);
       MonitorLocker ml(&done_monitor);
       if (done) {
         break;
       }
     }
   }
 }
 
 }  // namespace dart