Remove the blocking touch handlers for the input[type=range] and add touch-action instead

third_party/WebKit/Source/core/html/shadow/SliderThumbElement.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 63 matching lines @@
 {
     return create(document());
 }
 
 // FIXME: There are no ways to check if a node is a SliderThumbElement.
 DEFINE_ELEMENT_TYPE_CASTS(SliderThumbElement, isHTMLElement());
 
 class SliderContainerElement final : public HTMLDivElement {
 public:
     DECLARE_NODE_FACTORY(SliderContainerElement);
+    void defaultEventHandler(Event*) override;
+    void handleTouchEvent(TouchEvent*);
+    void updateTouchEventHandlerRegistry();
+    void didMoveToNewDocument(Document&) override;
+    void parserDidSetAttributes() override;
+    void parseAttribute(const QualifiedName&, const AtomicString&, const AtomicString&) override;
+    void removeAllEventListeners() override;
 
 private:
     explicit SliderContainerElement(Document&);
     LayoutObject* createLayoutObject(const ComputedStyle&) override;
     const AtomicString& shadowPseudoId() const override;
+
+    bool m_hasTouchEventHandler;
 };
 
 } // namespace blink
 
 #endif