diff --git a/src/gui/kernel/qopenglcontext.cpp b/src/gui/kernel/qopenglcontext.cpp
index e258218e85d..55fe036fe07 100644
--- a/src/gui/kernel/qopenglcontext.cpp
+++ b/src/gui/kernel/qopenglcontext.cpp
@@ -230,6 +230,7 @@ public:
 };
 
 static QThreadStorage<QGuiGLThreadContext *> qwindow_context_storage;
+static QOpenGLContext *global_share_context = 0;
 
 #ifndef QT_NO_DEBUG
 QHash<QOpenGLContext *, bool> QOpenGLContextPrivate::makeCurrentTracker;
@@ -330,6 +331,25 @@ QOpenGLContext *QOpenGLContextPrivate::setCurrentContext(QOpenGLContext *context
     return previous;
 }
 
+/*!
+    \internal
+
+    This function is used by the Qt WebEngine to set up context sharing
+    across multiple windows. Do not use it for any other purpose.
+*/
+void QOpenGLContextPrivate::setGlobalShareContext(QOpenGLContext *context)
+{
+    global_share_context = context;
+}
+
+/*!
+    \internal
+*/
+QOpenGLContext *QOpenGLContextPrivate::globalShareContext()
+{
+    return global_share_context;
+}
+
 int QOpenGLContextPrivate::maxTextureSize()
 {
     if (max_texture_size != -1)
diff --git a/src/gui/kernel/qopenglcontext_p.h b/src/gui/kernel/qopenglcontext_p.h
index 23c13b2e24d..b21ff670680 100644
--- a/src/gui/kernel/qopenglcontext_p.h
+++ b/src/gui/kernel/qopenglcontext_p.h
@@ -244,6 +244,9 @@ public:
 
     static QOpenGLContext *setCurrentContext(QOpenGLContext *context);
 
+    static void setGlobalShareContext(QOpenGLContext *context);
+    static QOpenGLContext *globalShareContext();
+
     int maxTextureSize();
 
     static QOpenGLContextPrivate *get(QOpenGLContext *context)