Rename all the LibGUI classes to GClassName.

LibGUI/GWindow.cpp

@@ -0,0 +1,42 @@
+#include "GWindow.h"
+#include "GEvent.h"
+#include "GEventLoop.h"
+#include <SharedGraphics/GraphicsBitmap.h>
+
+GWindow::GWindow(int window_id)
+    : m_window_id(window_id)
+{
+}
+
+GWindow::~GWindow()
+{
+}
+
+void GWindow::set_title(String&& title)
+{
+    if (m_title == title)
+        return;
+
+    m_title = move(title);
+}
+void GWindow::set_rect(const Rect& rect)
+{
+    if (m_rect == rect)
+        return;
+    m_rect = rect;
+    dbgprintf("GWindow::setRect %d,%d %dx%d\n", m_rect.x(), m_rect.y(), m_rect.width(), m_rect.height());
+}
+
+void GWindow::event(GEvent& event)
+{
+}
+
+bool GWindow::is_visible() const
+{
+    return false;
+}
+
+void GWindow::close()
+{
+}
+