Remove appbase as an external dependency.

lib/appbase/debug/Benchmark.hpp

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "debug/Log.hpp"
+
+#include <QElapsedTimer>
+#include <boost/noncopyable.hpp>
+
+namespace AB_NAMESPACE {
+
+class BenchmarkGuard : boost::noncopyable
+{
+public:
+    BenchmarkGuard(const QString &_name);
+    ~BenchmarkGuard();
+    qreal getElapsedMs();
+
+private:
+    QElapsedTimer timer_;
+    QString name_;
+};
+
+}  // namespace AB_NAMESPACE