Clean up HID backend and API.

chrome/browser/extensions/api/hid/hid_device_resource.cc

Index: chrome/browser/extensions/api/hid/hid_device_resource.cc
diff --git a/chrome/browser/extensions/api/hid/hid_device_resource.cc b/chrome/browser/extensions/api/hid/hid_device_resource.cc
deleted file mode 100644
index 074337a2a6810b7404e2421e71f5b4d476b0d51d..0000000000000000000000000000000000000000
--- a/chrome/browser/extensions/api/hid/hid_device_resource.cc
+++ /dev/null
@@ -1,34 +0,0 @@
-// 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 "chrome/browser/extensions/api/hid/hid_device_resource.h"
-
-#include <string>
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/memory/ref_counted.h"
-#include "device/hid/hid_connection.h"
-
-namespace extensions {
-
-static base::LazyInstance<ProfileKeyedAPIFactory<
-        ApiResourceManager<HidConnectionResource> > >
-            g_factory = LAZY_INSTANCE_INITIALIZER;
-
-// static
-template <>
-ProfileKeyedAPIFactory<ApiResourceManager<HidConnectionResource> >*
-ApiResourceManager<HidConnectionResource>::GetFactoryInstance() {
-  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() {}
-
-}  // namespace extensions