Windows QPA: Move mime-type related classes to the new interface

Move QWindowsMime (which was a public class in Qt 4 and moved to the QPA
plugin in Qt 5) to the platform namespace and add register functions to the
native application.

Move in test code from QtWinExtras.

Task-number: QTBUG-83252
Change-Id: Iaac440e2d5cb370110919921b1eeb779600b5b65
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/plugins/platforms/windows/qwindowsapplication.h b/src/plugins/platforms/windows/qwindowsapplication.h
index 6cf8577ab5..6e488e3ed0 100644
--- a/src/plugins/platforms/windows/qwindowsapplication.h
+++ b/src/plugins/platforms/windows/qwindowsapplication.h
@@ -62,6 +62,11 @@ public:
     DarkModeHandling darkModeHandling() const override;
     void setDarkModeHandling(DarkModeHandling handling) override;
 
+    void registerMime(QPlatformInterface::Private::QWindowsMime *mime) override;
+    void unregisterMime(QPlatformInterface::Private::QWindowsMime *mime) override;
+
+    int registerMimeType(const QString &mime) override;
+
 private:
     WindowActivationBehavior m_windowActivationBehavior = DefaultActivateWindow;
     TouchWindowTouchTypes m_touchWindowTouchTypes = NormalTouch;