UI: Refactor all browser dock classes in to one

Refactors all cases where a window class was created to show a browser
dock in to one class: BrowserDock.  Removes some unnecessary code
duplication.

UI/window-dock-browser.hpp

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "window-dock.hpp"
+#include <QScopedPointer>
+
+#include <browser-panel.hpp>
+extern QCef *cef;
+extern QCefCookieManager *panel_cookies;
+
+class BrowserDock : public OBSDock {
+public:
+	inline BrowserDock() : OBSDock() {}
+
+	QScopedPointer<QCefWidget> cefWidget;
+
+	inline void SetWidget(QCefWidget *widget_)
+	{
+		setWidget(widget_);
+		cefWidget.reset(widget_);
+	}
+};