Add support for blob urls for subresources.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index fe54affade1162264a9825f8cd515fe49d11bfab..67336900082dd07f307fb4063085e3e3e42e943e 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -1084,6 +1084,22 @@ mojom::StoragePartitionService* RenderThreadImpl::GetStoragePartitionService() {
   return storage_partition_service_.get();
 }
 
+mojom::RendererHost* RenderThreadImpl::GetRendererHost() {
+  if (!renderer_host_) {
+    GetConnector()->BindInterface(mojom::kBrowserServiceName,
+                                  mojo::MakeRequest(&renderer_host_));
+  }
+  return renderer_host_.get();
+}
+
+mojom::URLLoaderFactory* RenderThreadImpl::GetBlobURLLoaderFactory() {
+  if (!blob_url_loader_factory_) {
+    GetRendererHost()->GetBlobURLLoaderFactory(
+        mojo::MakeRequest(&blob_url_loader_factory_));
+  }
+  return blob_url_loader_factory_.get();
+}
+
 int RenderThreadImpl::GenerateRoutingID() {
   int32_t routing_id = MSG_ROUTING_NONE;
   render_message_filter()->GenerateRoutingID(&routing_id);