[InputEvent] Don't modify selection when transpose was canceled

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

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 2086 matching lines @@
                                 ->selection()
                                 .computeVisibleSelectionInDOMTreeDeprecated());
   if (range.isNull())
     return nullptr;
   return new StaticRangeVector(1, StaticRange::create(range));
 }
 
 DispatchEventResult dispatchBeforeInputInsertText(
     Node* target,
     const String& data,
-    InputEvent::InputType inputType) {
+    InputEvent::InputType inputType,
+    const StaticRangeVector* ranges) {
   if (!RuntimeEnabledFeatures::inputEventEnabled())
     return DispatchEventResult::NotCanceled;
   if (!target)
     return DispatchEventResult::NotCanceled;
   // TODO(chongz): Pass appropriate |ranges| after it's defined on spec.
   // http://w3c.github.io/editing/input-events.html#dom-inputevent-inputtype
   InputEvent* beforeInputEvent = InputEvent::createBeforeInput(
       inputType, data, inputTypeIsCancelable(inputType),
       InputEvent::EventIsComposing::NotComposing,
-      targetRangesForInputEvent(*target));
+      ranges ? ranges : targetRangesForInputEvent(*target));
   return target->dispatchEvent(beforeInputEvent);
 }
 
 DispatchEventResult dispatchBeforeInputEditorCommand(
     Node* target,
     InputEvent::InputType inputType,
     const StaticRangeVector* ranges) {
   if (!RuntimeEnabledFeatures::inputEventEnabled())
     return DispatchEventResult::NotCanceled;
   if (!target)
@@ skipping 58 matching lines @@
         return InputType::DeleteSoftLineBackward;
       if (granularity == ParagraphBoundary)
         return InputType::DeleteHardLineBackward;
       return InputType::DeleteContentBackward;
     default:
       return InputType::None;
   }
 }
 
 }  // namespace blink