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/iosdevicefactory.cpp

@@ -28,6 +28,10 @@
 
 #include "iosconstants.h"
 
+#include <utils/icon.h>
+
+#include <QIcon>
+
 namespace Ios {
 namespace Internal {
 
@@ -46,6 +50,18 @@ QList<Core::Id> IosDeviceFactory::availableCreationIds() const
     return QList<Core::Id>() << Core::Id(Constants::IOS_DEVICE_TYPE);
 }
 
+QIcon IosDeviceFactory::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 IosDeviceFactory::canCreate() const
 {
     return false;