Try to be cross-platform

logic/profiler/BaseProfiler.h

@@ -5,6 +5,7 @@
 class OneSixInstance;
 class SettingsObject;
 class MinecraftProcess;
+class QProcess;
 
 class BaseProfiler : public QObject
 {
@@ -22,6 +23,8 @@ protected:
 
 	virtual void beginProfilingImpl(MinecraftProcess *process) = 0;
 
+	qint64 pid(QProcess *process);
+
 signals:
 	void readyToLaunch(const QString &message);
 };