Bug 1646510: Remove deprecated nsContentUtils::GetCrossDocParentNode. r=nika

Moves its last remaining (parent-process-only) caller to use a local static
copy instead.

Differential Revision: https://phabricator.services.mozilla.com/D109420

dom/base/nsContentUtils.cpp

@@ -2294,22 +2294,6 @@ bool nsContentUtils::LookupBindingMember(
   return true;
 }
 
-// static
-nsINode* nsContentUtils::GetCrossDocParentNode(nsINode* aChild) {
-  MOZ_ASSERT(aChild, "The child is null!");
-
-  nsINode* parent = aChild->GetParentNode();
-  if (parent && parent->IsContent() && aChild->IsContent()) {
-    parent = aChild->AsContent()->GetFlattenedTreeParent();
-  }
-
-  if (parent || !aChild->IsDocument()) {
-    return parent;
-  }
-
-  return aChild->AsDocument()->GetEmbedderElement();
-}
-
 nsINode* nsContentUtils::GetNearestInProcessCrossDocParentNode(
     nsINode* aChild) {
   if (aChild->IsDocument()) {

dom/base/nsContentUtils.h

@@ -369,15 +369,12 @@ class nsContentUtils {
       int32_t* aOutputHeight);
 
   /**
-   * Returns the parent node of aChild crossing document boundaries.
+   * Returns the parent node of aChild crossing document boundaries, but skips
+   * any cross-process parent frames and continues with the nearest in-process
+   * frame in the hierarchy.
+   *
    * Uses the parent node in the composed document.
    */
-  static nsINode* GetCrossDocParentNode(nsINode* aChild);
-
-  /**
-   * Like GetCrossDocParentNode, but skips any cross-process parent frames and
-   * continues with the nearest in-process frame in the hierarchy.
-   */
   static nsINode* GetNearestInProcessCrossDocParentNode(nsINode* aChild);
 
   /**

dom/events/EventStateManager.cpp

@@ -3078,6 +3078,22 @@ void EventStateManager::DecideGestureEvent(WidgetGestureNotifyEvent* aEvent,
 }
 
 #ifdef XP_MACOSX
+static nsINode* GetCrossDocParentNode(nsINode* aChild) {
+  MOZ_ASSERT(aChild, "The child is null!");
+  MOZ_ASSERT(XRE_IsParentProcess());
+
+  nsINode* parent = aChild->GetParentNode();
+  if (parent && parent->IsContent() && aChild->IsContent()) {
+    parent = aChild->AsContent()->GetFlattenedTreeParent();
+  }
+
+  if (parent || !aChild->IsDocument()) {
+    return parent;
+  }
+
+  return aChild->AsDocument()->GetEmbedderElement();
+}
+
 static bool NodeAllowsClickThrough(nsINode* aNode) {
   while (aNode) {
     if (aNode->IsXULElement(nsGkAtoms::browser)) {
@@ -3095,7 +3111,7 @@ static bool NodeAllowsClickThrough(nsINode* aNode) {
           return false;
       }
     }
-    aNode = nsContentUtils::GetCrossDocParentNode(aNode);
+    aNode = GetCrossDocParentNode(aNode);
   }
   return true;
 }