Initial framework setup and skeleton for BackgroundFetchContext

content/browser/background_fetch/background_fetch_context.cc

+// Copyright 2017 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/browser/background_fetch/background_fetch_context.h"
+
+#include "content/browser/background_fetch/fetch_request.h"
+#include "content/browser/service_worker/service_worker_context_wrapper.h"
+#include "content/public/browser/browser_context.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/download_manager.h"
+#include "content/public/browser/storage_partition.h"
+
+namespace content {
+
+BackgroundFetchContext::BackgroundFetchContext(
+    BrowserContext* browser_context,
+    const scoped_refptr<ServiceWorkerContextWrapper>& service_worker_context)
+    : service_worker_context_(service_worker_context),
+      background_fetch_data_manager_(this) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  // TODO(harkness): BackgroundFetchContext should have
+  // ServiceWorkerContextObserver as a parent class and should register as an
+  // observer here.
+}
+
+BackgroundFetchContext::~BackgroundFetchContext() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+}
+
+void BackgroundFetchContext::Init() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  // TODO(harkness): Create the Download observer.
+  // TODO(harkness): Create the Batch manager.
+}
+
+void BackgroundFetchContext::Shutdown() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+}
+
+void BackgroundFetchContext::CreateRequest(const FetchRequest& fetch_request) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  // Inform the data manager about the new download.
+  background_fetch_data_manager_.CreateRequest(fetch_request);
+
+  // TODO(harkness): Make the request to the download manager.
+}
+
+}  // namespace content