Bug 1144418 - target events for text nodes in shadow dom to the nearest element in the flattened tree. r=wchen

--HG--
extra : rebase_source : 81de26ea74c76b33bd6727297957e42c4441fb43

dom/events/EventStateManager.cpp

@@ -488,7 +488,7 @@ EventStateManager::PreHandleEvent(nsPresContext* aPresContext,
   NS_WARN_IF_FALSE(!aTargetFrame ||
                    !aTargetFrame->GetContent() ||
                    aTargetFrame->GetContent() == aTargetContent ||
-                   aTargetFrame->GetContent()->GetParent() == aTargetContent,
+                   aTargetFrame->GetContent()->GetFlattenedTreeParent() == aTargetContent,
                    "aTargetFrame should be related with aTargetContent");
 
   mCurrentTarget = aTargetFrame;

layout/base/nsPresShell.cpp

@@ -7734,7 +7734,7 @@ PresShell::HandlePositionedEvent(nsIFrame* aTargetFrame,
       // We use weak pointers because during this tight loop, the node
       // will *not* go away.  And this happens on every mousemove.
       while (targetElement && !targetElement->IsElement()) {
-        targetElement = targetElement->GetParent();
+        targetElement = targetElement->GetFlattenedTreeParent();
       }
 
       // If we found an element, target it.  Otherwise, target *nothing*.