QHostInfo: remove unused QAbstractHostInfoLookupManager

If it was used in the past, it no longer is, and can't be, because
it's not exported.

Change-Id: Ifb9c353e756add5b57bf0c5706c075bb2eb41d83
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>

2 files changed, 10 insertions, 29 deletions

diff --git a/src/network/kernel/qhostinfo.cpp b/src/network/kernel/qhostinfo.cpp
index 483ab875c6..b9e386b526 100644
--- a/src/network/kernel/qhostinfo.cpp
+++ b/src/network/kernel/qhostinfo.cpp
@@ -392,7 +392,7 @@ QHostInfo QHostInfo::fromName(const QString &name)
 #endif
 
     QHostInfo hostInfo = QHostInfoAgent::fromName(name);
-    QAbstractHostInfoLookupManager* manager = theHostInfoLookupManager();
+    QHostInfoLookupManager* manager = theHostInfoLookupManager();
     manager->cache.put(name, hostInfo);
     return hostInfo;
 }
@@ -405,7 +405,7 @@ QHostInfo QHostInfoPrivate::fromName(const QString &name, QSharedPointer<QNetwor
 #endif
 
     QHostInfo hostInfo = QHostInfoAgent::fromName(name, session);
-    QAbstractHostInfoLookupManager* manager = theHostInfoLookupManager();
+    QHostInfoLookupManager* manager = theHostInfoLookupManager();
     manager->cache.put(name, hostInfo);
     return hostInfo;
 }
@@ -1077,7 +1077,7 @@ QHostInfo qt_qhostinfo_lookup(const QString &name, QObject *receiver, const char
     *id = -1;
 
     // check cache
-    QAbstractHostInfoLookupManager* manager = theHostInfoLookupManager();
+    QHostInfoLookupManager* manager = theHostInfoLookupManager();
     if (manager && manager->cache.isEnabled()) {
         QHostInfo info = manager->cache.get(name, valid);
         if (*valid) {
@@ -1094,7 +1094,7 @@ QHostInfo qt_qhostinfo_lookup(const QString &name, QObject *receiver, const char
 
 void qt_qhostinfo_clear_cache()
 {
-    QAbstractHostInfoLookupManager* manager = theHostInfoLookupManager();
+    QHostInfoLookupManager* manager = theHostInfoLookupManager();
     if (manager) {
         manager->clear();
     }
@@ -1103,7 +1103,7 @@ void qt_qhostinfo_clear_cache()
 #ifdef QT_BUILD_INTERNAL
 void Q_AUTOTEST_EXPORT qt_qhostinfo_enable_cache(bool e)
 {
-    QAbstractHostInfoLookupManager* manager = theHostInfoLookupManager();
+    QHostInfoLookupManager* manager = theHostInfoLookupManager();
     if (manager) {
         manager->cache.setEnabled(e);
     }
@@ -1111,7 +1111,7 @@ void Q_AUTOTEST_EXPORT qt_qhostinfo_enable_cache(bool e)
 
 void qt_qhostinfo_cache_inject(const QString &hostname, const QHostInfo &resolution)
 {
-    QAbstractHostInfoLookupManager* manager = theHostInfoLookupManager();
+    QHostInfoLookupManager* manager = theHostInfoLookupManager();
     if (!manager || !manager->cache.isEnabled())
         return;
 
@@ -1167,9 +1167,4 @@ void QHostInfoCache::clear()
     cache.clear();
 }
 
-QAbstractHostInfoLookupManager* QAbstractHostInfoLookupManager::globalInstance()
-{
-    return theHostInfoLookupManager();
-}
-
 QT_END_NAMESPACE
diff --git a/src/network/kernel/qhostinfo_p.h b/src/network/kernel/qhostinfo_p.h
index f5b630346c..747069a2c6 100644
--- a/src/network/kernel/qhostinfo_p.h
+++ b/src/network/kernel/qhostinfo_p.h
@@ -208,30 +208,14 @@ public:
 };
 
 
-class QAbstractHostInfoLookupManager : public QObject
-{
-    Q_OBJECT
-
-public:
-    ~QAbstractHostInfoLookupManager() {}
-    virtual void clear() = 0;
-
-    QHostInfoCache cache;
-
-protected:
-     QAbstractHostInfoLookupManager() {}
-     static QAbstractHostInfoLookupManager* globalInstance();
-
-};
-
-class QHostInfoLookupManager : public QAbstractHostInfoLookupManager
+class QHostInfoLookupManager : public QObject
 {
     Q_OBJECT
 public:
     QHostInfoLookupManager();
     ~QHostInfoLookupManager();
 
-    void clear() override;
+    void clear();
 
     // called from QHostInfo
     void scheduleLookup(QHostInfoRunnable *r);
@@ -241,6 +225,8 @@ public:
     void lookupFinished(QHostInfoRunnable *r);
     bool wasAborted(int id);
 
+    QHostInfoCache cache;
+
     friend class QHostInfoRunnable;
 protected:
 #if QT_CONFIG(thread)