[InputEvent] Update EndingSelection when appending UndoStep

third_party/WebKit/Source/core/editing/Editor.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 947 matching lines @@
 
   // Command will be equal to last edit command only in the case of typing
   if (last_edit_command_.Get() == cmd) {
     DCHECK(cmd->IsTypingCommand());
   } else if (last_edit_command_ && last_edit_command_->IsDragAndDropCommand() &&
              (cmd->GetInputType() == InputEvent::InputType::kDeleteByDrag ||
               cmd->GetInputType() == InputEvent::InputType::kInsertFromDrop)) {
     // Only register undo entry when combined with other commands.
     if (!last_edit_command_->GetUndoStep())
       undo_stack_->RegisterUndoStep(last_edit_command_->EnsureUndoStep());
+    last_edit_command_->EnsureUndoStep()->SetEndingSelection(
+        cmd->EnsureUndoStep()->EndingSelection());
     last_edit_command_->AppendCommandToUndoStep(cmd);
   } else {
     // Only register a new undo command if the command passed in is
     // different from the last command
     last_edit_command_ = cmd;
     undo_stack_->RegisterUndoStep(last_edit_command_->EnsureUndoStep());
   }
 
   RespondToChangedContents(new_selection.Base());
 }
@@ skipping 841 matching lines @@
 
 DEFINE_TRACE(Editor) {
   visitor->Trace(frame_);
   visitor->Trace(last_edit_command_);
   visitor->Trace(undo_stack_);
   visitor->Trace(mark_);
   visitor->Trace(typing_style_);
 }
 
 }  // namespace blink