[WIP] off-main-thread loading

content/renderer/renderer_blink_platform_impl.cc

 // Copyright (c) 2012 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/renderer_blink_platform_impl.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
+#include "base/feature_list.h"
 #include "base/files/file_path.h"
 #include "base/guid.h"
 #include "base/lazy_instance.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/memory_coordinator_client_registry.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/shared_memory.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/numerics/safe_conversions.h"
@@ skipping 13 matching lines @@
 #include "content/child/quota_message_filter.h"
 #include "content/child/storage_util.h"
 #include "content/child/thread_safe_sender.h"
 #include "content/child/web_database_observer_impl.h"
 #include "content/child/web_url_loader_impl.h"
 #include "content/child/webfileutilities_impl.h"
 #include "content/child/webmessageportchannel_impl.h"
 #include "content/common/file_utilities_messages.h"
 #include "content/common/frame_messages.h"
 #include "content/common/render_process_messages.h"
+#include "content/common/worker_fetch_context_factory.mojom.h"
+#include "content/public/common/content_features.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/service_manager_connection.h"
 #include "content/public/common/webplugininfo.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/public/renderer/media_stream_utils.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/renderer/cache_storage/webserviceworkercachestorage_impl.h"
 #include "content/renderer/device_sensors/device_light_event_pump.h"
 #include "content/renderer/device_sensors/device_motion_event_pump.h"
 #include "content/renderer/device_sensors/device_orientation_event_pump.h"
 #include "content/renderer/dom_storage/local_storage_cached_areas.h"
 #include "content/renderer/dom_storage/local_storage_namespace.h"
 #include "content/renderer/dom_storage/webstoragenamespace_impl.h"
 #include "content/renderer/gamepad_shared_memory_reader.h"
 #include "content/renderer/image_capture/image_capture_frame_grabber.h"
 #include "content/renderer/media/audio_decoder.h"
 #include "content/renderer/media/audio_device_factory.h"
 #include "content/renderer/media/renderer_webaudiodevice_impl.h"
 #include "content/renderer/media/renderer_webmidiaccessor_impl.h"
 #include "content/renderer/media_capture_from_element/canvas_capture_handler.h"
 #include "content/renderer/media_capture_from_element/html_audio_element_capturer_source.h"
 #include "content/renderer/media_capture_from_element/html_video_element_capturer_source.h"
 #include "content/renderer/media_recorder/media_recorder_handler.h"
 #include "content/renderer/mojo/blink_interface_provider_impl.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/renderer_clipboard_delegate.h"
+#include "content/renderer/service_worker/worker_fetch_context_info_impl.h"
 #include "content/renderer/webclipboard_impl.h"
 #include "content/renderer/webgraphicscontext3d_provider_impl.h"
 #include "content/renderer/webpublicsuffixlist_impl.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/config/gpu_info.h"
 #include "gpu/ipc/client/gpu_channel_host.h"
 #include "gpu/ipc/common/gpu_stream_constants.h"
 #include "ipc/ipc_sync_message_filter.h"
 #include "media/audio/audio_output_device.h"
 #include "media/blink/webcontentdecryptionmodule_impl.h"
@@ skipping 340 matching lines @@
   // Let the browser know we generated cacheable metadata for this resource in
   // CacheStorage. The browser may cache it and return it on subsequent
   // responses to speed the processing of this resource.
   std::vector<char> copy(data, data + size);
   RenderThread::Get()->Send(
       new RenderProcessHostMsg_DidGenerateCacheableMetadataInCacheStorage(
           url, base::Time::FromInternalValue(response_time), copy,
           cacheStorageOrigin, cacheStorageCacheName.utf8()));
 }
 
+std::unique_ptr<blink::WebWorkerFetchContextInfo>
+RendererBlinkPlatformImpl::createWorkerFetchContextInfo() {
+  if (!base::FeatureList::IsEnabled(features::kOffMainThreadFetch))
+    return nullptr;
+  mojom::WorkerFetchContextFactoryPtr worker_fetch_context_factory;
+  interfaceProvider()->getInterface(
+      mojo::MakeRequest(&worker_fetch_context_factory));
+  return base::MakeUnique<WorkerFetchContextInfoImpl>(
+      worker_fetch_context_factory.PassInterface());
+}
+
 WebString RendererBlinkPlatformImpl::defaultLocale() {
   return WebString::fromASCII(RenderThread::Get()->GetLocale());
 }
 
 void RendererBlinkPlatformImpl::suddenTerminationChanged(bool enabled) {
   if (enabled) {
     // We should not get more enables than disables, but we want it to be a
     // non-fatal error if it does happen.
     DCHECK_GT(sudden_termination_disables_, 0);
     sudden_termination_disables_ = std::max(sudden_termination_disables_ - 1,
@@ skipping 833 matching lines @@
 //------------------------------------------------------------------------------
 void RendererBlinkPlatformImpl::requestPurgeMemory() {
   // TODO(tasak|bashi): We should use ChildMemoryCoordinator here, but
   // ChildMemoryCoordinator isn't always available as it's only initialized
   // when kMemoryCoordinatorV0 is enabled.
   // Use ChildMemoryCoordinator when memory coordinator is always enabled.
   base::MemoryCoordinatorClientRegistry::GetInstance()->PurgeMemory();
 }
 
 }  // namespace content