WorkerShadowFetchContext

third_party/WebKit/Source/core/loader/ThreadableLoadingContext.cpp

Index: third_party/WebKit/Source/core/loader/ThreadableLoadingContext.cpp
diff --git a/third_party/WebKit/Source/core/loader/ThreadableLoadingContext.cpp b/third_party/WebKit/Source/core/loader/ThreadableLoadingContext.cpp
index 0df2ad47213df7af3b4e772b0f8176aebe3ac48d..b292b8cc39df2f3cf763bf10628c81a395f1c00b 100644
--- a/third_party/WebKit/Source/core/loader/ThreadableLoadingContext.cpp
+++ b/third_party/WebKit/Source/core/loader/ThreadableLoadingContext.cpp
@@ -10,7 +10,11 @@
 
 namespace blink {
 
-class DocumentThreadableLoadingContext final : public ThreadableLoadingContext {
+class DocumentThreadableLoadingContext final
+    : public GarbageCollected<DocumentThreadableLoadingContext>,
+      public ThreadableLoadingContext {
+  USING_GARBAGE_COLLECTED_MIXIN(DocumentThreadableLoadingContext);
+
  public:
   explicit DocumentThreadableLoadingContext(Document& document)
       : document_(&document) {}