Mark HID and USB device connections as non-persistent API resources.

extensions/browser/api/hid/hid_connection_resource.cc

 // Copyright 2014 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 "extensions/browser/api/hid/hid_connection_resource.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 14 matching lines @@
   return &g_factory.Get();
 }
 
 HidConnectionResource::HidConnectionResource(
     const std::string& owner_extension_id,
     scoped_refptr<device::HidConnection> connection)
     : ApiResource(owner_extension_id), connection_(connection) {}
 
 HidConnectionResource::~HidConnectionResource() {}
 
+bool HidConnectionResource::IsPersistent() const {
+  return false;
+}
+
 }  // namespace extensions