Implement the infrastructure of creating WorkerFetchContext in worker global scope.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index e38d3616ce7d85fc9231f9db613862dbd83f9ff0..2c884dd27ba3455efda213c10dd708b382eabb9d 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -16,6 +16,7 @@
 #include "base/debug/asan_invalid_access.h"
 #include "base/debug/crash_logging.h"
 #include "base/debug/dump_without_crashing.h"
+#include "base/feature_list.h"
 #include "base/files/file.h"
 #include "base/i18n/char_iterator.h"
 #include "base/logging.h"
@@ -69,6 +70,7 @@
 #include "content/common/site_isolation_policy.h"
 #include "content/common/swapped_out_messages.h"
 #include "content/common/view_messages.h"
+#include "content/common/worker_url_loader_factory_provider.mojom.h"
 #include "content/public/common/appcache_info.h"
 #include "content/public/common/associated_interface_provider.h"
 #include "content/public/common/bindings_policy.h"
@@ -142,6 +144,7 @@
 #include "content/renderer/renderer_webcolorchooser_impl.h"
 #include "content/renderer/savable_resources.h"
 #include "content/renderer/screen_orientation/screen_orientation_dispatcher.h"
+#include "content/renderer/service_worker/worker_fetch_context_impl.h"
 #include "content/renderer/shared_worker/shared_worker_repository.h"
 #include "content/renderer/shared_worker/websharedworker_proxy.h"
 #include "content/renderer/skia_benchmarking_extension.h"
@@ -178,6 +181,7 @@
 #include "services/ui/public/cpp/gpu/context_provider_command_buffer.h"
 #include "storage/common/data_element.h"
 #include "third_party/WebKit/public/platform/FilePathConversion.h"
+#include "third_party/WebKit/public/platform/InterfaceProvider.h"
 #include "third_party/WebKit/public/platform/URLConversion.h"
 #include "third_party/WebKit/public/platform/WebCachePolicy.h"
 #include "third_party/WebKit/public/platform/WebData.h"
@@ -2998,6 +3002,31 @@ RenderFrameImpl::CreateWorkerContentSettingsClientProxy() {
       this, frame_);
 }
 
+std::unique_ptr<blink::WebWorkerFetchContext>
+RenderFrameImpl::CreateWorkerFetchContext() {
+  DCHECK(base::FeatureList::IsEnabled(features::kOffMainThreadFetch));
+  mojom::WorkerURLLoaderFactoryProviderPtr worker_url_loader_factory_provider;
+  RenderThreadImpl::current()
+      ->blink_platform_impl()
+      ->GetInterfaceProvider()
+      ->GetInterface(mojo::MakeRequest(&worker_url_loader_factory_provider));
+  std::unique_ptr<WorkerFetchContextImpl> worker_fetch_context =
+      base::MakeUnique<WorkerFetchContextImpl>(
+          worker_url_loader_factory_provider.PassInterface());
+  blink::WebServiceWorkerNetworkProvider* web_provider =
+      frame_->DataSource()->GetServiceWorkerNetworkProvider();
+  if (web_provider) {
+    ServiceWorkerNetworkProvider* provider =
+        ServiceWorkerNetworkProvider::FromWebServiceWorkerNetworkProvider(
+            web_provider);
+    worker_fetch_context->set_service_worker_provider_id(
+        provider->provider_id());
+    worker_fetch_context->set_is_controlled_by_service_worker(
+        provider->IsControlledByServiceWorker());
+  }
+  return std::move(worker_fetch_context);
+}
+
 WebExternalPopupMenu* RenderFrameImpl::CreateExternalPopupMenu(
     const WebPopupMenuInfo& popup_menu_info,
     WebExternalPopupMenuClient* popup_menu_client) {