Tag ResourceRequest as originating from reserved IP ranges.

Source/core/fetch/ResourceFetcher.cpp

Index: Source/core/fetch/ResourceFetcher.cpp
diff --git a/Source/core/fetch/ResourceFetcher.cpp b/Source/core/fetch/ResourceFetcher.cpp
index 4e159b78055d21b800ddeca262fc7121307fb244..1e09ce2aa048a85c14801db9a514dbef0063396d 100644
--- a/Source/core/fetch/ResourceFetcher.cpp
+++ b/Source/core/fetch/ResourceFetcher.cpp
@@ -889,6 +889,8 @@ void ResourceFetcher::addAdditionalRequestHeaders(ResourceRequest& request, Reso
         determineRequestContext(request, type);
     if (type == Resource::LinkPrefetch || type == Resource::LinkSubresource)
         request.setHTTPHeaderField("Purpose", "prefetch");
+    if (frame()->document())
+        request.setOriginatesFromReservedIPRange(frame()->document()->isHostedInReservedIPRange());
 
     context().addAdditionalRequestHeaders(document(), request, (type == Resource::MainResource) ? FetchMainResource : FetchSubresource);
 }