DO NOT SUBMIT really old prototype of sprite recognition for image replacement

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

Index: third_party/WebKit/Source/core/loader/DocumentLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/DocumentLoader.cpp b/third_party/WebKit/Source/core/loader/DocumentLoader.cpp
index b78888927b7e4e32fbf65f20c453d3e5a5db2026..872959726b70b4a3ec3575e11b216dbb9bc2e1a8 100644
--- a/third_party/WebKit/Source/core/loader/DocumentLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/DocumentLoader.cpp
@@ -172,7 +172,10 @@ Resource* DocumentLoader::startPreload(Resource::Type type, FetchRequest& reques
     Resource* resource = nullptr;
     switch (type) {
     case Resource::Image:
-        resource = ImageResource::fetch(request, fetcher());
+        resource = ImageResource::fetch(request, fetcher(),
+            frame() && frame()->settings() && frame()->settings()->fetchImagePlaceholders()
+                ? ImageResource::PlaceholderRequestType::AllowPlaceholder
+                : ImageResource::PlaceholderRequestType::DisallowPlaceholder);
         break;
     case Resource::Script:
         resource = ScriptResource::fetch(request, fetcher());