Populates sourceDevice attribute into TouchEvent

Source/core/events/UIEventWithKeyState.h

Index: Source/core/events/UIEventWithKeyState.h
diff --git a/Source/core/events/UIEventWithKeyState.h b/Source/core/events/UIEventWithKeyState.h
index 8cd3d043b18a4d47ec5b7fabbf6b116e7c4ad0e6..2e4412acfafb99bcbf3854aa2e2155d1682de679 100644
--- a/Source/core/events/UIEventWithKeyState.h
+++ b/Source/core/events/UIEventWithKeyState.h
@@ -61,6 +61,16 @@ namespace blink {
         {
         }
 
+        UIEventWithKeyState(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView> view,
+            int detail, PassRefPtrWillBeRawPtr<InputDevice> sourceDevice, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
+            : UIEvent(type, canBubble, cancelable, view, detail, sourceDevice)
+            , m_ctrlKey(ctrlKey)
+            , m_altKey(altKey)
+            , m_shiftKey(shiftKey)
+            , m_metaKey(metaKey)
+        {
+        }
+
         // Expose these so init functions can set them.
         bool m_ctrlKey : 1;
         bool m_altKey : 1;