DevTools: Support asynchronous call stacks on backend.

Source/bindings/v8/ScriptDebugServer.h

Index: Source/bindings/v8/ScriptDebugServer.h
diff --git a/Source/bindings/v8/ScriptDebugServer.h b/Source/bindings/v8/ScriptDebugServer.h
index bd3e1a097e4be9b4fdb355fbbdaa9bf5db438a28..1bc4925f0a81fc2b9c2fde3ec621154f8ea30445 100644
--- a/Source/bindings/v8/ScriptDebugServer.h
+++ b/Source/bindings/v8/ScriptDebugServer.h
@@ -80,6 +80,7 @@ public:
 
     bool setScriptSource(const String& sourceID, const String& newContent, bool preview, String* error, RefPtr<TypeBuilder::Debugger::SetScriptSourceError>&, ScriptValue* newCallFrames, ScriptObject* result);
     void updateCallStack(ScriptValue* callFrame);
+    bool requestAsyncCallFrames();
 
     class Task {
     public:
@@ -110,6 +111,7 @@ protected:
     virtual ~ScriptDebugServer();
 
     ScriptValue currentCallFrame();
+    ScriptValue currentCallFrame(v8::Handle<v8::Object> executionState, v8::Handle<v8::Context> pausedContext);
 
     virtual ScriptDebugListener* getDebugListenerForContext(v8::Handle<v8::Context>) = 0;
     virtual void runMessageLoopOnPause(v8::Handle<v8::Context>) = 0;
@@ -119,6 +121,9 @@ protected:
     void handleProgramBreak(v8::Handle<v8::Object> executionState, v8::Handle<v8::Value> exception, v8::Handle<v8::Array> hitBreakpoints);
     void handleProgramBreak(const v8::Debug::EventDetails&, v8::Handle<v8::Value> exception, v8::Handle<v8::Array> hitBreakpointNumbers);
 
+    static void asyncCallFramesCallback(const v8::FunctionCallbackInfo<v8::Value>&);
+    void handleAsyncCallFrames(v8::Handle<v8::Object> executionState);
+
     static void v8DebugEventCallback(const v8::Debug::EventDetails& eventDetails);
     void handleV8DebugEvent(const v8::Debug::EventDetails& eventDetails);
 
@@ -132,6 +137,7 @@ protected:
     v8::Handle<v8::Context> m_pausedContext;
     bool m_breakpointsActivated;
     ScopedPersistent<v8::FunctionTemplate> m_breakProgramCallbackTemplate;
+    ScopedPersistent<v8::FunctionTemplate> m_asyncCallFramesCallbackTemplate;
     HashMap<String, OwnPtr<ScopedPersistent<v8::Script> > > m_compiledScripts;
     v8::Isolate* m_isolate;