TextTrackLoaderClient should not be a ResourceOwner.

third_party/WebKit/Source/core/loader/TextTrackLoader.h

Index: third_party/WebKit/Source/core/loader/TextTrackLoader.h
diff --git a/third_party/WebKit/Source/core/loader/TextTrackLoader.h b/third_party/WebKit/Source/core/loader/TextTrackLoader.h
index b301b352915a120ccb765371e0782856c6ee9e54..1677f88cc602c5dc15f3f63adf45807d96f79435 100644
--- a/third_party/WebKit/Source/core/loader/TextTrackLoader.h
+++ b/third_party/WebKit/Source/core/loader/TextTrackLoader.h
@@ -38,9 +38,9 @@ namespace blink {
 class Document;
 class TextTrackLoader;
 
-class TextTrackLoaderClient : public ResourceOwner<RawResource> {
+class TextTrackLoaderClient {
 public:
-    ~TextTrackLoaderClient() override {}
+    virtual ~TextTrackLoaderClient() {}
 
     virtual void newCuesAvailable(TextTrackLoader*) = 0;
     virtual void cueLoadingCompleted(TextTrackLoader*, bool loadingFailed) = 0;