Non passive touch end or touch cancel listeners should not block scroll.

third_party/WebKit/Source/web/ChromeClientImpl.cpp

Index: third_party/WebKit/Source/web/ChromeClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/ChromeClientImpl.cpp b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
index 2210928659e4074606bc73b74029c8499211d3cc..25b7ec14669166be409622e6d45ecbabfaec5615 100644
--- a/third_party/WebKit/Source/web/ChromeClientImpl.cpp
+++ b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
@@ -909,11 +909,13 @@ bool ChromeClientImpl::shouldOpenModalDialogDuringPageDismissal(const DialogType
     return false;
 }
 
-void ChromeClientImpl::setEventListenerProperties(WebEventListenerClass eventClass, WebEventListenerProperties properties)
+void ChromeClientImpl::setHaveTouchEventListeners(bool hasListeners)
 {
-    if (eventClass == WebEventListenerClass::Touch)
-        m_webView->hasTouchEventHandlers(properties != WebEventListenerProperties::Nothing);
+    m_webView->hasTouchEventHandlers(hasListeners);
+}
 
+void ChromeClientImpl::setEventListenerProperties(WebEventListenerClass eventClass, WebEventListenerProperties properties)
+{
     if (WebLayerTreeView* treeView = m_webView->layerTreeView())
         treeView->setEventListenerProperties(eventClass, properties);
 }