Android: Introduce removeForwardPortRecipe()

It's going to be used in couple of places.

Change-Id: I21c7724da03fb1d294d53fbb372ca4b909a3a842
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/android/androidrunnerworker.cpp

@@ -20,6 +20,8 @@
 #include <qtsupport/baseqtversion.h>
 #include <qtsupport/qtkitaspect.h>
 
+#include <solutions/tasking/conditional.h>
+
 #include <utils/hostosinfo.h>
 #include <utils/qtcprocess.h>
 #include <utils/url.h>
@@ -606,6 +608,42 @@ void AndroidRunnerWorker::startDebuggerServer(const QString &packageDir,
     }
 }
 
+ExecutableItem AndroidRunnerWorker::removeForwardPortRecipe(
+    const QString &port, const QString &adbArg, const QString &portType)
+{
+    const auto onForwardListSetup = [](Process &process) {
+        process.setCommand({AndroidConfig::adbToolPath(), {"forward", "--list"}});
+    };
+    const auto onForwardListDone = [port](const Process &process) {
+        return process.cleanedStdOut().trimmed().contains(port);
+    };
+
+    const auto onForwardRemoveSetup = [this, port](Process &process) {
+        process.setCommand({AndroidConfig::adbToolPath(), {selector(), "--remove", port}});
+    };
+    const auto onForwardRemoveDone = [this](const Process &process) {
+        emit remoteErrorOutput(process.cleanedStdErr().trimmed());
+        return true;
+    };
+
+    const auto onForwardPortSetup = [this, port, adbArg](Process &process) {
+        process.setCommand({AndroidConfig::adbToolPath(), {selector(), port, adbArg}});
+    };
+    const auto onForwardPortDone = [this, port, portType](DoneWith result) {
+        if (result == DoneWith::Success)
+            m_afterFinishAdbCommands.push_back("forward --remove " + port);
+        else
+            emit remoteProcessFinished(Tr::tr("Failed to forward %1 debugging ports.").arg(portType));
+    };
+
+    return Group {
+        If (ProcessTask(onForwardListSetup, onForwardListDone)) >> Then {
+            ProcessTask(onForwardRemoveSetup, onForwardRemoveDone, CallDoneIf::Error)
+        },
+        ProcessTask(onForwardPortSetup, onForwardPortDone)
+    };
+}
+
 ExecutableItem AndroidRunnerWorker::pidRecipe()
 {
     const Storage<PidUserPair> pidStorage;

src/plugins/android/androidrunnerworker.h

@@ -74,6 +74,8 @@ private:
     };
     void onProcessIdChanged(const PidUserPair &pidUser);
     bool isPreNougat() const { return m_apiLevel > 0 && m_apiLevel <= 23; }
+    Tasking::ExecutableItem removeForwardPortRecipe(const QString &port, const QString &adbArg,
+                                                    const QString &portType);
     Tasking::ExecutableItem pidRecipe();
 
     // Create the processes and timer in the worker thread, for correct thread affinity