Oilpan: Prepare to move ResourceLoader and ResourceLoaderSet to Oilpan heap.

Source/core/fetch/ResourceLoader.h

Index: Source/core/fetch/ResourceLoader.h
diff --git a/Source/core/fetch/ResourceLoader.h b/Source/core/fetch/ResourceLoader.h
index 6e089deeb064c1e3dd543be7418ec555a40f2f15..6f67699396a9563da91ffc926ad6134ca5dacdf0 100644
--- a/Source/core/fetch/ResourceLoader.h
+++ b/Source/core/fetch/ResourceLoader.h
@@ -48,10 +48,11 @@ class ResourceError;
 class ResourceResponse;
 class ResourceLoaderHost;
 
-class ResourceLoader FINAL : public RefCounted<ResourceLoader>, protected blink::WebURLLoaderClient {
+class ResourceLoader FINAL : public RefCountedWillBeGarbageCollectedFinalized<ResourceLoader>, protected WebURLLoaderClient {
 public:
-    static PassRefPtr<ResourceLoader> create(ResourceLoaderHost*, Resource*, const ResourceRequest&, const ResourceLoaderOptions&);
+    static PassRefPtrWillBeRawPtr<ResourceLoader> create(ResourceLoaderHost*, Resource*, const ResourceRequest&, const ResourceLoaderOptions&);
     virtual ~ResourceLoader();
+    void trace(Visitor*);
 
     void start();
     void changeToSynchronous();
@@ -112,7 +113,7 @@ private:
     ResourceRequest& applyOptions(ResourceRequest&) const;
 
     OwnPtr<blink::WebURLLoader> m_loader;
-    RefPtrWillBePersistent<ResourceLoaderHost> m_host;
+    RefPtrWillBeMember<ResourceLoaderHost> m_host;
 
     ResourceRequest m_request;
     ResourceRequest m_originalRequest; // Before redirects.
@@ -139,7 +140,7 @@ private:
         ConnectionStateFailed,
     };
 
-    Resource* m_resource;
+    RawPtrWillBeMember<Resource> m_resource;
     ResourceLoaderState m_state;
 
     // Used for sanity checking to make sure we don't experience illegal state