ProjectExplorer: Provide a way to extend RunWorkerFactory

In the light of docker support it would be nice to have a way
to tell existing RunWorkerFactories that they also work for
docker, or generally to increase the scope to which they apply
after construction time.

Small con: Some more boiler plate,
Small pros: Setup using the new method looks similar to what we use
in the other factories, and the Factories types are recognizable
when debugging.

Change-Id: Idb1757f519e7151b835326aa8b98aeaa4a372cc4
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/projectexplorer/runcontrol.cpp

@@ -80,6 +80,11 @@ static QList<RunWorkerFactory *> g_runWorkerFactories;
 static QSet<Utils::Id> g_runModes;
 static QSet<Utils::Id> g_runConfigs;
 
+RunWorkerFactory::RunWorkerFactory()
+{
+    g_runWorkerFactories.append(this);
+}
+
 RunWorkerFactory::RunWorkerFactory(const WorkerCreator &producer,
                                    const QList<Utils::Id> &runModes,
                                    const QList<Utils::Id> &runConfigs,
@@ -103,6 +108,26 @@ RunWorkerFactory::~RunWorkerFactory()
     g_runWorkerFactories.removeOne(this);
 }
 
+void RunWorkerFactory::setProducer(const WorkerCreator &producer)
+{
+    m_producer = producer;
+}
+
+void RunWorkerFactory::addSupportedRunMode(Utils::Id runMode)
+{
+    m_supportedRunModes.append(runMode);
+}
+
+void RunWorkerFactory::addSupportedRunConfig(Utils::Id runConfig)
+{
+    m_supportedRunConfigurations.append(runConfig);
+}
+
+void RunWorkerFactory::addSupportedDeviceType(Utils::Id deviceType)
+{
+    m_supportedDeviceTypes.append(deviceType);
+}
+
 bool RunWorkerFactory::canRun(Utils::Id runMode,
                               Utils::Id deviceType,
                               const QString &runConfigId) const