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

Source/core/fetch/ResourceLoaderSet.cpp

Index: Source/core/fetch/ResourceLoaderSet.cpp
diff --git a/Source/core/fetch/ResourceLoaderSet.cpp b/Source/core/fetch/ResourceLoaderSet.cpp
index dc61539e3ad43ee07c135c81033d6f78c9303aab..71f4c297f7c4791309422d3ca67068ea33703e0f 100644
--- a/Source/core/fetch/ResourceLoaderSet.cpp
+++ b/Source/core/fetch/ResourceLoaderSet.cpp
@@ -35,9 +35,21 @@
 
 namespace blink {
 
+PassOwnPtrWillBeRawPtr<ResourceLoaderSet> ResourceLoaderSet::create()
+{
+    return adoptPtrWillBeNoop(new ResourceLoaderSet);
+}
+
+void ResourceLoaderSet::trace(Visitor* visitor)
+{
+#if ENABLE(OILPAN)
+    visitor->trace(m_set);
+#endif
+}
+
 void ResourceLoaderSet::cancelAll()
 {
-    Vector<RefPtr<ResourceLoader> > loadersCopy;
+    WillBeHeapVector<RefPtrWillBeMember<ResourceLoader> > loadersCopy;
     copyToVector(m_set, loadersCopy);
     size_t size = loadersCopy.size();
     for (size_t i = 0; i < size; ++i)
@@ -46,7 +58,7 @@ void ResourceLoaderSet::cancelAll()
 
 void ResourceLoaderSet::setAllDefersLoading(bool defers)
 {
-    Vector<RefPtr<ResourceLoader> > loadersCopy;
+    WillBeHeapVector<RefPtrWillBeMember<ResourceLoader> > loadersCopy;
     copyToVector(m_set, loadersCopy);
     size_t size = loadersCopy.size();
     for (size_t i = 0; i < size; ++i)