Store USB device permissions in website settings.

chrome/browser/usb/usb_permission_context_factory.h

+// 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.
+
+#ifndef CHROME_BROWSER_USB_USB_PERMISSION_CONTEXT_FACTORY_H_
+#define CHROME_BROWSER_USB_USB_PERMISSION_CONTEXT_FACTORY_H_
+
+#include "base/memory/singleton.h"
+#include "chrome/browser/permissions/permission_context_factory_base.h"
+#include "components/content_settings/core/common/content_settings_types.h"
+
+class UsbPermissionContext;
+class Profile;
+
+class UsbPermissionContextFactory : public PermissionContextFactoryBase {
+ public:
+  static UsbPermissionContext* GetForProfile(Profile* profile);
+  static UsbPermissionContextFactory* GetInstance();

[Bernhard Bauer, 2015/10/06 10:22:44]

I think you still need to call this method from
https://code.google.com/p/chromium/codesearch#chromium/src/chrome/browser/pro...

[Reilly Grant (use Gerrit), 2015/10/06 20:45:30]

Done.

+
+ private:
+  friend struct base::DefaultSingletonTraits<UsbPermissionContextFactory>;
+
+  UsbPermissionContextFactory();
+  ~UsbPermissionContextFactory() override;
+
+  // BrowserContextKeyedBaseFactory methods:
+  KeyedService* BuildServiceInstanceFor(
+      content::BrowserContext* profile) const override;
+
+  DISALLOW_COPY_AND_ASSIGN(UsbPermissionContextFactory);
+};
+
+#endif  // CHROME_BROWSER_USB_USB_PERMISSION_CONTEXT_FACTORY_H_