Themed Icons: Introduce Utils::Icon

Instead of describing icons via file name or in the themed icons case
via
a string that is a list of mask/color pairs, we have now a class for it.

Icons are now listed in per-plugin *icons.h headers.

RunControl::m_icon was The only place left where an icon property was in
fact a string. This patch changes that member to be a Utils::Icon.

Change-Id: Ibcfa8bb25e6d2e330c567ee7ccc0b97ead603177
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/plugins/projectexplorer/runconfiguration.cpp

@@ -551,6 +551,16 @@ QString RunControl::displayName() const
     return m_displayName;
 }
 
+void RunControl::setIcon(const Utils::Icon &icon)
+{
+    m_icon = icon;
+}
+
+Utils::Icon RunControl::icon() const
+{
+    return m_icon;
+}
+
 Abi RunControl::abi() const
 {
     if (const RunConfiguration *rc = m_runConfiguration.data())