Copying text closes the keyboard and the text input gets unfocused, forcing virtual keyboard is get…

Source/core/editing/FrameSelection.cpp

Index: Source/core/editing/FrameSelection.cpp
diff --git a/Source/core/editing/FrameSelection.cpp b/Source/core/editing/FrameSelection.cpp
index df236f8f75946dda54c909588173f5a4d24b6f50..b15480a15be9b8c16fc14e0b8e9744f9c66192bc 100644
--- a/Source/core/editing/FrameSelection.cpp
+++ b/Source/core/editing/FrameSelection.cpp
@@ -299,6 +299,18 @@ void FrameSelection::setSelection(const VisibleSelection& newSelection, SetSelec
     m_frame->domWindow()->enqueueDocumentEvent(Event::create(EventTypeNames::selectionchange));
 }
 
+bool FrameSelection::collapseToEnd()
+{
+    // Check for selection is editable and whether it's range selection or not.
+    if (!selection().rootEditableElement() || !isRange())
+        return false;
+
+    // Collapsing the selection to end of range selection.
+    moveTo(m_selection.end(), DOWNSTREAM);
+
+    return true;
+}
+
 static bool removingNodeRemovesPosition(Node& node, const Position& position)
 {
     if (!position.anchorNode())