[Oilpan] [Reland] Migrate classes under core/fetch to Oilpan heap

Source/modules/imagebitmap/ImageBitmapModuleTest.cpp

Index: Source/modules/imagebitmap/ImageBitmapModuleTest.cpp
diff --git a/Source/modules/imagebitmap/ImageBitmapModuleTest.cpp b/Source/modules/imagebitmap/ImageBitmapModuleTest.cpp
index b2adf1ae6e0b1e1374b29696753f350e3f9ff17e..325fdddc99227377a3d916d4fbdeb988296c3580 100644
--- a/Source/modules/imagebitmap/ImageBitmapModuleTest.cpp
+++ b/Source/modules/imagebitmap/ImageBitmapModuleTest.cpp
@@ -33,7 +33,7 @@ protected:
         replaceMemoryCacheForTesting(m_globalMemoryCache.release());
     }
 
-    OwnPtrWillBePersistent<MemoryCache> m_globalMemoryCache;
+    Persistent<MemoryCache> m_globalMemoryCache;
 };
 
 // Verifies that ImageBitmaps constructed from ImageBitmaps hold onto their own Image.