AutoTest: Drop ITestSettingsPage intermediate class

Less code in total, and more uniform with other IOptionPage subclasses.

Change-Id: I3d1cb9fae0faf32a360394cc5cf3262a9b59b456
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/autotest/testframeworkmanager.cpp

@@ -28,12 +28,13 @@
 #include "autotestplugin.h"
 #include "iframeworksettings.h"
 #include "itestparser.h"
-#include "itestsettingspage.h"
 #include "testrunner.h"
 #include "testsettings.h"
 #include "testtreeitem.h"
 #include "testtreemodel.h"
 
+#include <coreplugin/dialogs/ioptionspage.h>
+
 #include <utils/algorithm.h>
 #include <utils/qtcassert.h>
 
@@ -218,4 +219,10 @@ unsigned TestFrameworkManager::priority(const Id &frameworkId) const
     return unsigned(-1);
 }
 
+Id ITestFramework::settingsId() const
+{
+    return Core::Id(Constants::SETTINGSPAGE_PREFIX)
+            .withSuffix(QString("%1.%2").arg(priority()).arg(QLatin1String(name())));
+}
+
 } // namespace Autotest