WIP POC blob transport over mojo

content/child/blob_storage/webblobregistry_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/child/blob_storage/webblobregistry_impl.h"
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/guid.h"
 #include "base/location.h"
@@ skipping 32 matching lines @@
       main_runner_(std::move(main_runner)),
       sender_(std::move(sender)) {
   // Record a dummy trace event on startup so the 'Storage' category shows up
   // in the chrome://tracing viewer.
   TRACE_EVENT0("Blob", "Init");
 }
 
 WebBlobRegistryImpl::~WebBlobRegistryImpl() {
 }
 
+base::SingleThreadTaskRunner* WebBlobRegistryImpl::GetIORunner() {
+  return io_runner_.get();
+}
+
 std::unique_ptr<WebBlobRegistry::Builder> WebBlobRegistryImpl::CreateBuilder(
     const blink::WebString& uuid,
     const blink::WebString& content_type) {
   return base::WrapUnique(new BuilderImpl(uuid, content_type, sender_.get(),
                                           io_runner_, main_runner_));
 }
 
 void WebBlobRegistryImpl::RegisterBlobData(const blink::WebString& uuid,
                                            const blink::WebBlobData& data) {
   TRACE_EVENT0("Blob", "Registry::RegisterBlob");
@@ skipping 174 matching lines @@
                                     expected_modification_time);
 }
 
 void WebBlobRegistryImpl::BuilderImpl::Build() {
   BlobTransportController::InitiateBlobTransfer(
       uuid_, content_type_, std::move(consolidation_), sender_,
       io_runner_.get(), main_runner_);
 }
 
 }  // namespace content