Populates sourceDevice attribute into TouchEvent

Source/core/events/TouchEvent.cpp

Index: Source/core/events/TouchEvent.cpp
diff --git a/Source/core/events/TouchEvent.cpp b/Source/core/events/TouchEvent.cpp
index d064db1a6c98436166495eda847ca5629a784b4a..eb312aac268c6db61fe6e64ac325ce22de002b69 100644
--- a/Source/core/events/TouchEvent.cpp
+++ b/Source/core/events/TouchEvent.cpp
@@ -39,15 +39,16 @@ namespace blink {
 
 TouchEvent::TouchEvent()
 {
+    sourceDevice()->setFiresTouchEvents(true);

[tdresser, 2015/06/03 17:50:39]

Shouldn't this use touchEventInstance?

 }
 
 TouchEvent::TouchEvent(TouchList* touches, TouchList* targetTouches,
-        TouchList* changedTouches, const AtomicString& type,
-        PassRefPtrWillBeRawPtr<AbstractView> view,
-        bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool cancelable, bool causesScrollingIfUncanceled,
-        double uiCreateTime)
-    : UIEventWithKeyState(type, true, cancelable, view, 0,
-                        ctrlKey, altKey, shiftKey, metaKey)
+    TouchList* changedTouches, const AtomicString& type,
+    PassRefPtrWillBeRawPtr<AbstractView> view,
+    PassRefPtrWillBeRawPtr<InputDevice> sourceDevice,
+    bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool cancelable, bool causesScrollingIfUncanceled,
+    double uiCreateTime)
+    : UIEventWithKeyState(type, true, cancelable, view, 0, sourceDevice, ctrlKey, altKey, shiftKey, metaKey)

[tdresser, 2015/06/03 17:50:39]

Shouldn't this use touchEventInstance?

     , m_touches(touches)
     , m_targetTouches(targetTouches)
     , m_changedTouches(changedTouches)
@@ -85,6 +86,7 @@ void TouchEvent::initTouchEvent(ScriptState* scriptState, TouchList* touches, To
     m_altKey = altKey;
     m_shiftKey = shiftKey;
     m_metaKey = metaKey;
+    sourceDevice()->setFiresTouchEvents(true);
 }
 
 const AtomicString& TouchEvent::interfaceName() const