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

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

Index: third_party/WebKit/Source/core/html/shadow/SliderThumbElement.h
diff --git a/third_party/WebKit/Source/core/html/shadow/SliderThumbElement.h b/third_party/WebKit/Source/core/html/shadow/SliderThumbElement.h
index ef06fa4719a2c66637f14f0da3b8ce1f9fd0edb4..80d789dd87a748300c581b20e69d6ab909db7981 100644
--- a/third_party/WebKit/Source/core/html/shadow/SliderThumbElement.h
+++ b/third_party/WebKit/Source/core/html/shadow/SliderThumbElement.h
@@ -81,11 +81,20 @@ 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