Reland: Refactor Script(Loader|Runner): don't access Resources all over the place...

Source/core/html/parser/HTMLScriptRunner.cpp

Index: Source/core/html/parser/HTMLScriptRunner.cpp
diff --git a/Source/core/html/parser/HTMLScriptRunner.cpp b/Source/core/html/parser/HTMLScriptRunner.cpp
index 8029b33116645f1136bb6b8c0fa55cce7337700e..ec2442f8a305c2f3ac57b8de2ce1792a554a64c1 100644
--- a/Source/core/html/parser/HTMLScriptRunner.cpp
+++ b/Source/core/html/parser/HTMLScriptRunner.cpp
@@ -74,10 +74,12 @@ void HTMLScriptRunner::detach()
         return;
 
     m_parserBlockingScript.stopWatchingForLoad(this);
+    m_parserBlockingScript.releaseElementAndClear();
 
     while (!m_scriptsToExecuteAfterParsing.isEmpty()) {
         PendingScript pendingScript = m_scriptsToExecuteAfterParsing.takeFirst();
         pendingScript.stopWatchingForLoad(this);
+        pendingScript.releaseElementAndClear();
     }
     m_document = nullptr;
 }