Store USB device permissions in website settings.

chrome/browser/usb/usb_permission_context.cc

Index: chrome/browser/usb/usb_permission_context.cc
diff --git a/chrome/browser/usb/usb_permission_context.cc b/chrome/browser/usb/usb_permission_context.cc
new file mode 100644
index 0000000000000000000000000000000000000000..eda8a7e692640bbe18039e650715a0ff6fe75b92
--- /dev/null
+++ b/chrome/browser/usb/usb_permission_context.cc
@@ -0,0 +1,14 @@
+// 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.h"
+
+UsbPermissionContext::UsbPermissionContext(Profile* profile)
+    : PermissionContextBase(profile, CONTENT_SETTINGS_TYPE_USB) {}
+
+UsbPermissionContext::~UsbPermissionContext() {}
+
+bool UsbPermissionContext::IsRestrictedToSecureOrigins() const {
+  return true;
+}