Service CreateNewWindow on the UI thread with a new mojo interface

content/common/associated_interface_provider_impl.cc

 // Copyright 2016 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/common/associated_interface_provider_impl.h"
+#include "base/callback.h"
+#include "base/run_loop.h"
 #include "mojo/public/cpp/bindings/associated_binding.h"
 
 namespace content {
 
 class AssociatedInterfaceProviderImpl::LocalProvider
     : public mojom::AssociatedInterfaceProvider {
  public:
   explicit LocalProvider(mojom::AssociatedInterfaceProviderAssociatedPtr* proxy)
       : associated_interface_provider_binding_(this) {
     associated_interface_provider_binding_.Bind(
@@ skipping 36 matching lines @@
 AssociatedInterfaceProviderImpl::AssociatedInterfaceProviderImpl()
     : local_provider_(new LocalProvider(&proxy_)) {}
 
 AssociatedInterfaceProviderImpl::~AssociatedInterfaceProviderImpl() {}
 
 void AssociatedInterfaceProviderImpl::GetInterface(
     const std::string& name,
     mojo::ScopedInterfaceEndpointHandle handle) {
   mojom::AssociatedInterfaceAssociatedRequest request;
   request.Bind(std::move(handle));
-  return proxy_->GetAssociatedInterface(name, std::move(request));
+  proxy_->GetAssociatedInterface(name, std::move(request));
 }
 
 void AssociatedInterfaceProviderImpl::OverrideBinderForTesting(
     const std::string& name,
     const base::Callback<void(mojo::ScopedInterfaceEndpointHandle)>& binder) {
   DCHECK(local_provider_);
   local_provider_->SetBinderForName(name, binder);
 }
 
 }  // namespace content