Add chrome.usb.listInterfaces API

chrome/browser/extensions/api/usb/usb_manual_apitest.cc

Index: chrome/browser/extensions/api/usb/usb_manual_apitest.cc
diff --git a/chrome/browser/extensions/api/usb/usb_manual_apitest.cc b/chrome/browser/extensions/api/usb/usb_manual_apitest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f5f5c5f37b51c4f883f77170c9f3fc58895c3695
--- /dev/null
+++ b/chrome/browser/extensions/api/usb/usb_manual_apitest.cc
@@ -0,0 +1,25 @@
+// Copyright (c) 2013 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/permissions/permissions_api.h"
+#include "chrome/browser/extensions/extension_apitest.h"
+#include "chrome/common/chrome_switches.h"
+
+namespace {
+
+class UsbManualApiTest : public ExtensionApiTest {
+ public:
+  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
+    ExtensionApiTest::SetUpCommandLine(command_line);
+    command_line->AppendSwitch(switches::kEnableExperimentalExtensionApis);
+  }
+};
+
+}  // namespace
+
+IN_PROC_BROWSER_TEST_F(UsbManualApiTest, MANUAL_ListInterfaces) {
+  extensions::PermissionsRequestFunction::SetIgnoreUserGestureForTests(true);
+  extensions::PermissionsRequestFunction::SetAutoConfirmForTests(true);
+  ASSERT_TRUE(RunExtensionTest("usb_manual/list_interfaces"));
+}