Oilpan: have PendingScripts trace their script elements.

Source/core/html/parser/HTMLDocumentParser.h

Index: Source/core/html/parser/HTMLDocumentParser.h
diff --git a/Source/core/html/parser/HTMLDocumentParser.h b/Source/core/html/parser/HTMLDocumentParser.h
index 5b9daa2a4e8b1678fcebd4bf15e50636e2ae025b..227cf5225071662925c256de56366e5d47454da0 100644
--- a/Source/core/html/parser/HTMLDocumentParser.h
+++ b/Source/core/html/parser/HTMLDocumentParser.h
@@ -65,8 +65,9 @@ class ScriptSourceCode;
 
 class PumpSession;
 
-class HTMLDocumentParser :  public ScriptableDocumentParser, HTMLScriptRunnerHost, ResourceClient {
+class HTMLDocumentParser :  public ScriptableDocumentParser, private HTMLScriptRunnerHost {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLDocumentParser);
 public:
     static PassRefPtrWillBeRawPtr<HTMLDocumentParser> create(HTMLDocument& document, bool reportErrors)
     {
@@ -136,15 +137,11 @@ private:
     virtual void executeScriptsWaitingForResources() OVERRIDE FINAL;
 
     // HTMLScriptRunnerHost
-    virtual void watchForLoad(Resource*) OVERRIDE FINAL;
-    virtual void stopWatchingForLoad(Resource*) OVERRIDE FINAL;
+    virtual void notifyScriptLoaded(Resource*) OVERRIDE FINAL;
     virtual HTMLInputStream& inputStream() OVERRIDE FINAL { return m_input; }
     virtual bool hasPreloadScanner() const OVERRIDE FINAL { return m_preloadScanner.get() && !shouldUseThreading(); }
     virtual void appendCurrentInputStreamToPreloadScannerAndScan() OVERRIDE FINAL;
 
-    // ResourceClient
-    virtual void notifyFinished(Resource*) OVERRIDE FINAL;
-
     void startBackgroundParser();
     void stopBackgroundParser();
     void validateSpeculations(PassOwnPtr<ParsedChunk> lastChunk);
@@ -186,7 +183,7 @@ private:
 
     OwnPtr<HTMLToken> m_token;
     OwnPtr<HTMLTokenizer> m_tokenizer;
-    OwnPtr<HTMLScriptRunner> m_scriptRunner;
+    OwnPtrWillBeMember<HTMLScriptRunner> m_scriptRunner;
     OwnPtrWillBeMember<HTMLTreeBuilder> m_treeBuilder;
     OwnPtr<HTMLPreloadScanner> m_preloadScanner;
     OwnPtr<HTMLPreloadScanner> m_insertionPreloadScanner;