ProjectExplorer: Introduce IDeviceFactory::iconForId()

This adds the possibility to have an icon for a device type. Now,
a Kit can have a proper icon if just the device type but not device
is selected.

Change-Id: I2a382ffd5b46cbbf74cdd0b934b3d450d300bfff
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
Reviewed-by: Vikas Pachdha <vikas.pachdha@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/ios/iossimulatorfactory.cpp

@@ -27,8 +27,11 @@
 #include <QLatin1String>
 #include "iosconstants.h"
 #include "iossimulator.h"
+#include "utils/icon.h"
 #include "utils/qtcassert.h"
 
+#include <QIcon>
+
 namespace Ios {
 namespace Internal {
 
@@ -49,6 +52,18 @@ QList<Core::Id> IosSimulatorFactory::availableCreationIds() const
     return QList<Core::Id>() << Core::Id(Constants::IOS_SIMULATOR_TYPE);
 }
 
+QIcon IosSimulatorFactory::iconForId(Core::Id type) const
+{
+    Q_UNUSED(type)
+    using namespace Utils;
+    static const QIcon icon =
+            Icon::combinedIcon({Icon({{":/ios/images/iosdevicesmall.png",
+                                       Theme::PanelTextColorDark}}, Icon::Tint),
+                                Icon({{":/ios/images/iosdevice.png",
+                                       Theme::IconsBaseColor}})});
+    return icon;
+}
+
 bool IosSimulatorFactory::canCreate() const
 {
     return false;