Merge 95259 - Fragment navigations should interrupt a provisional load of a different document

Source/WebCore/loader/HistoryController.cpp

Index: Source/WebCore/loader/HistoryController.cpp
===================================================================
--- Source/WebCore/loader/HistoryController.cpp	(revision 95471)
+++ Source/WebCore/loader/HistoryController.cpp	(working copy)
@@ -524,6 +524,11 @@
     if (!m_provisionalItem)
         return;
 
+    // The provisional item may represent a different pending navigation.
+    // Don't commit it if it isn't a same document navigation.
+    if (m_currentItem && !m_currentItem->shouldDoSameDocumentNavigationTo(m_provisionalItem.get()))
+        return;
+
     // Commit the provisional item.
     m_frameLoadComplete = false;
     m_previousItem = m_currentItem;