Partially implement WorkerFetchContext and WorkerThreadableLoadingContext and add virtual tests

third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.cpp

Index: third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.cpp
diff --git a/third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.cpp b/third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.cpp
index 60db84572149354eff3a0ab4487921945843322e..d6a19cca8c124ce45edbbfb422c7b850cfc9b715 100644
--- a/third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.cpp
+++ b/third_party/WebKit/Source/platform/loader/fetch/ResourceRequest.cpp
@@ -75,6 +75,9 @@ ResourceRequest::ResourceRequest(const KURL& url)
       check_for_browser_side_navigation_(true),
       ui_start_time_(0),
       is_external_request_(false),
+      loading_ipc_type_(RuntimeEnabledFeatures::loadingWithMojoEnabled()
+                            ? WebURLRequest::LoadingIPCType::kMojo
+                            : WebURLRequest::LoadingIPCType::kChromeIPC),
       is_same_document_navigation_(false),
       input_perf_metric_report_policy_(
           InputToLoadPerfMetricReportPolicy::kNoReport),
@@ -114,6 +117,7 @@ ResourceRequest::ResourceRequest(CrossThreadResourceRequestData* data)
   check_for_browser_side_navigation_ = data->check_for_browser_side_navigation_;
   ui_start_time_ = data->ui_start_time_;
   is_external_request_ = data->is_external_request_;
+  loading_ipc_type_ = data->loading_ipc_type_;
   input_perf_metric_report_policy_ = data->input_perf_metric_report_policy_;
   redirect_status_ = data->redirect_status_;
 }
@@ -162,6 +166,7 @@ std::unique_ptr<CrossThreadResourceRequestData> ResourceRequest::CopyData()
   data->check_for_browser_side_navigation_ = check_for_browser_side_navigation_;
   data->ui_start_time_ = ui_start_time_;
   data->is_external_request_ = is_external_request_;
+  data->loading_ipc_type_ = loading_ipc_type_;
   data->input_perf_metric_report_policy_ = input_perf_metric_report_policy_;
   data->redirect_status_ = redirect_status_;
   return data;