Move content/renderer/background_sync to Blink

third_party/WebKit/Source/modules/background_sync/BackgroundSyncClientImpl.cpp

+// 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 "modules/background_sync/BackgroundSyncClientImpl.h"
+
+#include "core/EventTypeNames.h"
+#include "core/events/Event.h"
+#include "modules/background_sync/SyncEvent.h"
+#include "modules/serviceworkers/WaitUntilObserver.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "platform/RuntimeEnabledFeatures.h"
+#include "public/platform/Platform.h"
+#include "public/platform/WebThread.h"
+#include "wtf/CurrentTime.h"
+#include "wtf/Functional.h"
+#include "wtf/PtrUtil.h"
+#include <utility>
+
+namespace blink {
+
+// static
+void BackgroundSyncClientImpl::Create(
+    ServiceWorkerGlobalScope* globalScope,
+    mojo::InterfaceRequest<mojom::blink::BackgroundSyncServiceClient> request) {
+  mojo::MakeStrongBinding(wrapUnique(new BackgroundSyncClientImpl(globalScope)),

[jbroman, 2016/11/21 21:36:01]

nit: since makeUnique has started to make its way into Blink now, this could be:

mojo::MakeStrongBinding(makeUnique<BackgroundSyncClientImpl>(globalScope),
                        std::move(request));

You use makeUnique elsewhere, so you might as well do so here.

+                          std::move(request));
+}
+
+BackgroundSyncClientImpl::~BackgroundSyncClientImpl() {}
+
+BackgroundSyncClientImpl::BackgroundSyncClientImpl(
+    ServiceWorkerGlobalScope* globalScope)
+    : m_globalScope(globalScope) {}
+
+void BackgroundSyncClientImpl::Sync(
+    const WTF::String& tag,
+    mojom::blink::BackgroundSyncEventLastChance lastChance,
+    const SyncCallback& callback) {
+  DCHECK(!Platform::current()->mainThread()->isCurrentThread());
+
+  if (!m_globalScope) {
+    callback.Run(mojom::blink::ServiceWorkerEventStatus::ABORTED,
+                 WTF::currentTime());
+    return;
+  }
+
+  if (!RuntimeEnabledFeatures::backgroundSyncEnabled()) {
+    callback.Run(mojom::blink::ServiceWorkerEventStatus::COMPLETED,
+                 WTF::currentTime());
+    return;
+  }
+
+  WaitUntilObserver* observer = WaitUntilObserver::create(
+      m_globalScope, WaitUntilObserver::Sync,
+      makeUnique<WTF::Function<void(blink::mojom::ServiceWorkerEventStatus,

[jbroman, 2016/11/21 21:36:01]

nit: probably easier to read if you use the type alias you created:

makeUnique<WaitUntilObserver::Callback>(...)

Unless, of course, you end up having to bind.

+                                    const double&)>>(callback));
+
+  Event* event = SyncEvent::create(
+      EventTypeNames::sync, tag,
+      lastChance == mojom::BackgroundSyncEventLastChance::IS_LAST_CHANCE,
+      observer);
+
+  m_globalScope->dispatchExtendableEvent(event, observer);
+}
+
+}  // namespace blink