Fix some compiler warnings

- Remove deprecated Qt::AA_EnableHighDpiScaling and Qt::AA_UseHighDpiPixmaps
  from examples. High-DPI scaling is always enabled.
- Reorder initialization of members of QWebEngineDownloadRequestPrivate.
  Also remove m_ prefix from public members' name.
- Remove unused parameters from methods of DummyDelegate.
- Add missing overrides in auto tests.

Pick-to: 6.2
Change-Id: I18d6973b8bee574b37b73fbaaa8d57002ac8ba2d
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

2 files changed, 0 insertions, 4 deletions

diff --git a/examples/webenginewidgets/minimal/doc/src/minimal.qdoc b/examples/webenginewidgets/minimal/doc/src/minimal.qdoc
index b04390d23..9a0ee4593 100644
--- a/examples/webenginewidgets/minimal/doc/src/minimal.qdoc
+++ b/examples/webenginewidgets/minimal/doc/src/minimal.qdoc
@@ -57,9 +57,6 @@
     \l{QWebEngineProfile::cachePath} and
     \l{QWebEngineProfile::persistentStoragePath}).
 
-    We also set the Qt::AA_EnableHighDpiScaling attribute. This lets the web
-    view automatically scale on high-dpi displays.
-
     Next, we instantiate a QApplication and a QWebEngineView. The URL
     to load is taken from \c commandLineUrlArgument and
     loaded by calling \l QWebEngineView::setUrl. The view widget is
diff --git a/examples/webenginewidgets/minimal/main.cpp b/examples/webenginewidgets/minimal/main.cpp
index b31382ad5..a2c5e4873 100644
--- a/examples/webenginewidgets/minimal/main.cpp
+++ b/examples/webenginewidgets/minimal/main.cpp
@@ -64,7 +64,6 @@ QUrl commandLineUrlArgument()
 int main(int argc, char *argv[])
 {
     QCoreApplication::setOrganizationName("QtExamples");
-    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QApplication app(argc, argv);
 
     QWebEngineView view;