Add support for blob urls for subresources.

content/renderer/render_frame_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 4292 matching lines @@
     // was a navigation initiated by the renderer to the new RequestExtraData
     // instance.
     RequestExtraData* current_request_data =
         static_cast<RequestExtraData*>(request.GetExtraData());
     if (current_request_data) {
       extra_data->set_navigation_initiated_by_renderer(
           current_request_data->navigation_initiated_by_renderer());
     }
   }
 
-  extra_data->set_url_loader_factory_override(url_loader_factory_.get());
+  // TODO: generalize how non-network schemes are sent to the renderer and used.

[kinuko, 2017/06/07 04:58:35]

Filed a bug- crbug.com/730338

+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableNetworkService)) {
+    if (request.Url().ProtocolIs(url::kBlobScheme)) {
+      extra_data->set_url_loader_factory_override(
+          RenderThreadImpl::current()->GetBlobURLLoaderFactory());
+    }
+  }
+
+  if (!extra_data->url_loader_factory_override())
+    extra_data->set_url_loader_factory_override(url_loader_factory_.get());
+
   // TODO(kinuko, yzshen): We need to set up throttles for some worker cases
   // that don't go through here.
   extra_data->set_url_loader_throttles(std::move(throttles));
 
   request.SetExtraData(extra_data);
 
   if (request.GetPreviewsState() == WebURLRequest::kPreviewsUnspecified) {
     if (is_main_frame_ && !navigation_state->request_committed()) {
       request.SetPreviewsState(static_cast<WebURLRequest::PreviewsState>(
           navigation_state->common_params().previews_state));
@@ skipping 2471 matching lines @@
       policy(info.default_policy),
       replaces_current_history_item(info.replaces_current_history_item),
       history_navigation_in_new_child_frame(
           info.is_history_navigation_in_new_child_frame),
       client_redirect(info.is_client_redirect),
       cache_disabled(info.is_cache_disabled),
       form(info.form),
       source_location(info.source_location) {}
 
 }  // namespace content