Revert of Introduce the Blink NotificationService, move permission checks there

content/browser/notifications/blink_notification_service_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/browser/notifications/blink_notification_service_impl.h"
-
-#include "base/logging.h"
-#include "content/browser/notifications/platform_notification_context_impl.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/content_browser_client.h"
-#include "content/public/browser/platform_notification_service.h"
-#include "content/public/common/content_client.h"
-#include "third_party/WebKit/public/platform/modules/permissions/permission_status.mojom.h"
-#include "url/gurl.h"
-
-namespace content {
-
-namespace {
-
-// Returns the implementation of the PlatformNotificationService. May be NULL.
-PlatformNotificationService* Service() {
-  return GetContentClient()->browser()->GetPlatformNotificationService();
-}
-
-}  // namespace
-
-BlinkNotificationServiceImpl::BlinkNotificationServiceImpl(
-    PlatformNotificationContextImpl* notification_context,
-    ResourceContext* resource_context,
-    int render_process_id,
-    mojo::InterfaceRequest<blink::mojom::NotificationService> request)
-    : notification_context_(notification_context),
-      resource_context_(resource_context),
-      render_process_id_(render_process_id),
-      binding_(this, std::move(request)) {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
-  DCHECK(notification_context_);
-  DCHECK(resource_context_);
-
-  binding_.set_connection_error_handler(
-      base::Bind(&BlinkNotificationServiceImpl::OnConnectionError,
-                 base::Unretained(this) /* the channel is owned by this */));
-}
-
-BlinkNotificationServiceImpl::~BlinkNotificationServiceImpl() {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
-}
-
-void BlinkNotificationServiceImpl::GetPermissionStatus(
-    const mojo::String& origin,
-    const GetPermissionStatusCallback& callback) {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
-
-  if (!Service()) {
-    callback.Run(blink::mojom::PermissionStatus::DENIED);
-    return;
-  }
-
-  blink::mojom::PermissionStatus permission_status =
-      Service()->CheckPermissionOnIOThread(
-          resource_context_, GURL(origin.get()), render_process_id_);
-
-  callback.Run(permission_status);
-}
-
-void BlinkNotificationServiceImpl::OnConnectionError() {
-  notification_context_->RemoveService(this);
-  // |this| has now been deleted.
-}
-
-}  // namespace content