Limit foreign fetch to only intercept requests made from secure contexts.

content/child/request_extra_data.cc

Index: content/child/request_extra_data.cc
diff --git a/content/child/request_extra_data.cc b/content/child/request_extra_data.cc
index b26120bcabc090274d58b3984be567129f07d3db..be4d0359349b372b930328e1286cad67673c4d47 100644
--- a/content/child/request_extra_data.cc
+++ b/content/child/request_extra_data.cc
@@ -24,8 +24,8 @@ RequestExtraData::RequestExtraData()
       transferred_request_request_id_(-1),
       service_worker_provider_id_(kInvalidServiceWorkerProviderId),
       originated_from_service_worker_(false),
-      lofi_state_(LOFI_UNSPECIFIED) {
-}
+      lofi_state_(LOFI_UNSPECIFIED),
+      initiated_in_secure_context_(false) {}
 
 RequestExtraData::~RequestExtraData() {
 }