debugger: refactoring in the gdbengine

src/plugins/debugger/gdb/gdbprocessbase.h

@@ -36,6 +36,8 @@
 namespace Debugger {
 namespace Internal {
 
+class GdbEngine;
+
 // GdbProcessBase is inherited by GdbProcess and the gdb/trk Adapter.
 // In the GdbProcess case it's just a wrapper around a QProcess running
 // gdb, in the Adapter case it's the interface to the gdb process in
@@ -62,6 +64,8 @@ public:
     virtual void setEnvironment(const QStringList &env) = 0;
     virtual bool isAdapter() const = 0;
 
+    virtual void attach(GdbEngine *engine) const = 0;
+
 signals:
     void error(QProcess::ProcessError);
     void started();