ViewportChangeListener deregister and reregister on DOM changes.

Source/core/html/HTMLImageElement.cpp

Index: Source/core/html/HTMLImageElement.cpp
diff --git a/Source/core/html/HTMLImageElement.cpp b/Source/core/html/HTMLImageElement.cpp
index f8865cee2860b3afa49671d943b54a959f85b9da..e738685e6f1267e4894d29acbb622019399bce0d 100644
--- a/Source/core/html/HTMLImageElement.cpp
+++ b/Source/core/html/HTMLImageElement.cpp
@@ -346,6 +346,8 @@ Node::InsertionNotificationRequest HTMLImageElement::insertedInto(ContainerNode*
 {
     if (!m_formWasSetByParser || NodeTraversal::highestAncestorOrSelf(*insertionPoint) != NodeTraversal::highestAncestorOrSelf(*m_form.get()))
         resetFormOwner();
+    if (m_listener)
+        document().mediaQueryMatcher().addViewportListener(m_listener.get());
 
     bool imageWasModified = false;
     if (RuntimeEnabledFeatures::pictureEnabled()) {
@@ -368,6 +370,8 @@ void HTMLImageElement::removedFrom(ContainerNode* insertionPoint)
 {
     if (!m_form || NodeTraversal::highestAncestorOrSelf(*m_form.get()) != NodeTraversal::highestAncestorOrSelf(*this))
         resetFormOwner();
+    if (m_listener)
+        document().mediaQueryMatcher().removeViewportListener(m_listener.get());
     HTMLElement::removedFrom(insertionPoint);
 }