Send lostpointercapture on touch capturing

third_party/WebKit/Source/core/input/PointerEventManager.cpp

Index: third_party/WebKit/Source/core/input/PointerEventManager.cpp
diff --git a/third_party/WebKit/Source/core/input/PointerEventManager.cpp b/third_party/WebKit/Source/core/input/PointerEventManager.cpp
index 5a18188771175f635344fb342c9b6c0b0ac91bbf..dd68d96ae390ad8dc3dc08e3bd54161b75ac95ed 100644
--- a/third_party/WebKit/Source/core/input/PointerEventManager.cpp
+++ b/third_party/WebKit/Source/core/input/PointerEventManager.cpp
@@ -307,7 +307,10 @@ void PointerEventManager::sendTouchCancelPointerEvent(PassRefPtrWillBeRawPtr<Eve
         getEffectiveTargetForPointerEvent(target, pointerEvent->pointerId()),
         pointerEvent.get());
 
-    setNodeUnderPointer(pointerEvent, nullptr);
+    releasePointerCapture(pointerEvent->pointerId());
+
+    // Sending the leave/out events as well as lostpointercapture if required
+    processCaptureAndPositionOfPointerEvent(pointerEvent, nullptr);
 
     removePointer(pointerEvent);
 }
@@ -319,11 +322,12 @@ WebInputEventResult PointerEventManager::sendTouchPointerEvent(
     const double clientX, const double clientY)
 {
     RefPtrWillBeRawPtr<EventTarget> target = prpTarget;
+    bool isNew = false;
 
     RefPtrWillBeRawPtr<PointerEvent> pointerEvent =
         m_pointerEventFactory.create(
         pointerEventNameForTouchPointState(touchPoint.state()),
-        touchPoint, modifiers, width, height, clientX, clientY);
+        touchPoint, modifiers, width, height, clientX, clientY, isNew);
 
     processCaptureAndPositionOfPointerEvent(pointerEvent, target);
 
@@ -332,9 +336,17 @@ WebInputEventResult PointerEventManager::sendTouchPointerEvent(
         getEffectiveTargetForPointerEvent(target, pointerEvent->pointerId()),
         pointerEvent.get());
 
+    // Setting the implicit capture for touch
+    if (isNew)
+        setPointerCapture(pointerEvent->pointerId(), target);
+
     if (touchPoint.state() == PlatformTouchPoint::TouchReleased
         || touchPoint.state() == PlatformTouchPoint::TouchCancelled) {
-        setNodeUnderPointer(pointerEvent, nullptr);
+        releasePointerCapture(pointerEvent->pointerId());
+
+        // Sending the leave/out events as well as lostpointercapture if required
+        processCaptureAndPositionOfPointerEvent(pointerEvent, nullptr);
+
         removePointer(pointerEvent);
     }
 
@@ -401,6 +413,8 @@ void PointerEventManager::clear()
     m_preventMouseEventForPointerTypeMouse = false;
     m_pointerEventFactory.clear();
     m_nodeUnderPointer.clear();
+    m_pointerCaptureTarget.clear();
+    m_pendingPointerCaptureTarget.clear();
 }
 
 void PointerEventManager::processCaptureAndPositionOfPointerEvent(