Store USB device permissions in website settings.

chrome/browser/usb/usb_permission_context_factory.cc

+// Copyright 2015 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 "chrome/browser/usb/usb_permission_context_factory.h"
+
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/usb/usb_permission_context.h"
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+
+UsbPermissionContextFactory::UsbPermissionContextFactory()
+    : PermissionContextFactoryBase(
+          "UsbPermissionContext",
+          BrowserContextDependencyManager::GetInstance()) {}
+
+UsbPermissionContextFactory::~UsbPermissionContextFactory() {}
+
+KeyedService* UsbPermissionContextFactory::BuildServiceInstanceFor(
+    content::BrowserContext* context) const {
+  return new UsbPermissionContext(Profile::FromBrowserContext(context));
+}
+
+// static
+UsbPermissionContextFactory* UsbPermissionContextFactory::GetInstance() {
+  return base::Singleton<UsbPermissionContextFactory>::get();
+}
+
+// static
+UsbPermissionContext* UsbPermissionContextFactory::GetForProfile(
+    Profile* profile) {
+  return static_cast<UsbPermissionContext*>(
+      GetInstance()->GetServiceForBrowserContext(profile, true));
+}