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

Source/core/fetch/RawResource.cpp

Index: Source/core/fetch/RawResource.cpp
diff --git a/Source/core/fetch/RawResource.cpp b/Source/core/fetch/RawResource.cpp
index 918723de7eac9868dcab67e6a32998d626fb8848..e33f5a445d8bd2be455ffa5ff9f839e92ad23573 100644
--- a/Source/core/fetch/RawResource.cpp
+++ b/Source/core/fetch/RawResource.cpp
@@ -58,6 +58,9 @@ void RawResource::preCacheSubstituteDataForMainResource(const FetchRequest& requ
 
 ResourcePtr<Resource> RawResource::fetchSynchronously(FetchRequest& request, ResourceFetcher* fetcher)
 {
+    if (!fetcher)
+        return nullptr;
+
     request.mutableResourceRequest().setTimeoutInterval(10);
     ResourceLoaderOptions options(request.options());
     options.synchronousPolicy = RequestSynchronously;