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

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

Index: third_party/WebKit/Source/core/html/shadow/SliderThumbElement.cpp
diff --git a/third_party/WebKit/Source/core/html/shadow/SliderThumbElement.cpp b/third_party/WebKit/Source/core/html/shadow/SliderThumbElement.cpp
index 8d9d3f157686106527291c1d3c1f15c6a4c3c210..93c892b9c3fe8c41f824cea7cc1395555968a926 100644
--- a/third_party/WebKit/Source/core/html/shadow/SliderThumbElement.cpp
+++ b/third_party/WebKit/Source/core/html/shadow/SliderThumbElement.cpp
@@ -31,9 +31,10 @@
 
 #include "core/html/shadow/SliderThumbElement.h"
 
+#include "core/dom/shadow/ShadowRoot.h"
 #include "core/events/Event.h"
 #include "core/events/MouseEvent.h"
-#include "core/dom/shadow/ShadowRoot.h"
+#include "core/events/TouchEvent.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/forms/StepRange.h"
@@ -307,6 +308,33 @@ LayoutObject* SliderContainerElement::createLayoutObject(const ComputedStyle&)
     return new LayoutSliderContainer(this);
 }
 
+void SliderContainerElement::defaultEventHandler(Event* event)
+{
+    if (event->isTouchEvent()) {
+        handleTouchEvent(toTouchEvent(event));
+        return;
+    }
+}
+
+void SliderContainerElement::handleTouchEvent(TouchEvent* event)
+{
+    HTMLInputElement* input = static_cast<HTMLInputElement*>(shadowHost());

[majidvp, 2016/08/12 03:35:43]

s/static_cast<HTMLInputElement*>/toHTMLInputElement/

+    if (input->isDisabledOrReadOnly())
+        return;
+
+    if (event->type() == EventTypeNames::touchend) {
+        input->dispatchFormControlChangeEvent();
+        event->setDefaultHandled();
+        return;
+    }
+
+    TouchList* touches = event->targetTouches();
+    SliderThumbElement* thumb = toSliderThumbElement(input->userAgentShadowRoot()->getElementById(ShadowElementNames::sliderThumb()));
+    if (touches->length() == 1) {
+        thumb->setPositionFromPoint(touches->item(0)->absoluteLocation());
+    }
+}
+
 const AtomicString& SliderContainerElement::shadowPseudoId() const
 {
     DEFINE_STATIC_LOCAL(const AtomicString, mediaSliderContainer, ("-webkit-media-slider-container"));