Sever HTMLImportChild client connection upon disposal.

Source/core/html/imports/LinkImport.cpp

Index: Source/core/html/imports/LinkImport.cpp
diff --git a/Source/core/html/imports/LinkImport.cpp b/Source/core/html/imports/LinkImport.cpp
index 812afedd10b4957c7cb9b20f74cf66d926e118f6..913676b3a1725941392c870f50ce7deb07e2b4ad 100644
--- a/Source/core/html/imports/LinkImport.cpp
+++ b/Source/core/html/imports/LinkImport.cpp
@@ -107,14 +107,12 @@ void LinkImport::didFinish()
     m_owner->scheduleEvent();
 }
 
-#if !ENABLE(OILPAN)
-void LinkImport::importChildWasDestroyed(HTMLImportChild* child)
+void LinkImport::importChildWasDisposed(HTMLImportChild* child)
 {
     ASSERT(m_child == child);
     m_child = nullptr;
     m_owner = nullptr;
 }
-#endif
 
 bool LinkImport::isSync() const
 {