[WIP] Protocol for sending information about Promises to frontend.

Source/core/inspector/PromiseTracker.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PromiseTracker_h
 #define PromiseTracker_h
 
+#include "core/InspectorTypeBuilder.h"
 #include "wtf/HashMap.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 #include <v8.h>
 
 namespace blink {
 
 class ScriptState;
 
 class PromiseTracker {
     WTF_MAKE_NONCOPYABLE(PromiseTracker);
 public:
     PromiseTracker();
     ~PromiseTracker();
 
     bool isEnabled() const { return m_isEnabled; }
-    void enable();
-    void disable();
+    void setEnabled(bool);
 
     void clear();
 
     void didReceiveV8PromiseEvent(ScriptState*, v8::Handle<v8::Object> promise, v8::Handle<v8::Value> parentPromise, int status);
 
+    PassRefPtr<TypeBuilder::Array<TypeBuilder::Debugger::PromiseDetails> > promises();
+
     class PromiseData;
 
     typedef Vector<RefPtr<PromiseData> > PromiseDataVector;
     typedef HashMap<int, PromiseDataVector> PromiseDataMap;
 
 private:
+    int circularSequentialId();
+    PassRefPtr<PromiseData> createPromiseDataIfNeeded(v8::Isolate*, v8::Handle<v8::Object> promise);
+
     bool m_isEnabled;
+    int m_circularSequentialId;
     PromiseDataMap m_promiseDataMap;
 };
 
 } // namespace blink
 
 #endif // !defined(PromiseTracker_h)