Support merged Dart-JS callstacks

Source/core/inspector/JavaScriptCallFrame.h

 /*
  * Copyright (c) 2010, 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 40 matching lines @@
     }
     ~JavaScriptCallFrame();
     void trace(Visitor*);
 
     JavaScriptCallFrame* caller();
 
     int sourceID() const;
     int line() const;
     int column() const;
     String functionName() const;
+    double framePointerHigh() const;
+    double framePointerLow() const;
+
 
     v8::Handle<v8::Value> scopeChain() const;
     int scopeType(int scopeIndex) const;
     v8::Handle<v8::Value> thisObject() const;
     String stepInPositions() const;
     bool isAtReturn() const;
     v8::Handle<v8::Value> returnValue() const;
 
     v8::Handle<v8::Value> evaluate(const String& expression);
     v8::Handle<v8::Value> restart();
     ScriptValue setVariableValue(ScriptState*, int scopeNumber, const String& variableName, const ScriptValue& newValue);
 
 private:
     JavaScriptCallFrame(v8::Handle<v8::Context> debuggerContext, v8::Handle<v8::Object> callFrame);
 
     int callV8FunctionReturnInt(const char* name) const;
+    uint32_t callV8FunctionReturnUint32(const char* name) const;
     String callV8FunctionReturnString(const char* name) const;
 
     v8::Isolate* m_isolate;
     RefPtrWillBeMember<JavaScriptCallFrame> m_caller;
     ScopedPersistent<v8::Context> m_debuggerContext;
     ScopedPersistent<v8::Object> m_callFrame;
 };
 
 } // namespace WebCore
 
 
 #endif // JavaScriptCallFrame_h