Support merged Dart-JS callstacks

Source/bindings/dart/DartController.cpp

 // Copyright (c) 2009, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 216 matching lines @@
     DART_RECORD_TIMER("  createDOMEnabledIsolate took");
     return newIsolate;
 }
 
 void DartController::shutdownIsolate(Dart_Isolate isolate)
 {
     DartDOMData* domData = DartDOMData::current();
     ASSERT(domData->isDOMEnabled());
     // If the following assert triggers, we have hit dartbug.com/14183
     // FIXME: keep the isolate alive until the recursion level is 0.
-    ASSERT(!*(domData->recursion()));
+    ASSERT(!domData->stackTraceTimestampTracker()->recursionLevel());
     DartScriptDebugServer::shared().unregisterIsolate(isolate, m_frame->page());
     DartIsolateDestructionObservers* observers = domData->isolateDestructionObservers();
     for (DartIsolateDestructionObservers::iterator it = observers->begin(); it != observers->end(); ++it)
         (*it)->isolateDestroyed();
     Dart_ShutdownIsolate();
     delete domData;
 }
 
 DartController::DartController(LocalFrame* frame)
     : m_frame(frame)
@@ skipping 684 matching lines @@
     Dart_ExitIsolate();
     loader->processSingleRequest(isolate, url, callback);
 
     // Restore caller isolate.
     Dart_EnterIsolate(caller);
 
     // FIXME: We need some way to return a Dart_Handle to the isolate we just created.
 }
 
 }