WebUSB: Create a requestDevice method separate from getDevice.

public/platform/modules/webusb/WebUSBDeviceEnumerationOptions.h

Index: public/platform/modules/webusb/WebUSBDeviceEnumerationOptions.h
diff --git a/public/platform/modules/webusb/WebUSBDeviceEnumerationOptions.h b/public/platform/modules/webusb/WebUSBDeviceEnumerationOptions.h
deleted file mode 100644
index 85a65df013b980b744c0d215a72e0102bc013532..0000000000000000000000000000000000000000
--- a/public/platform/modules/webusb/WebUSBDeviceEnumerationOptions.h
+++ /dev/null
@@ -1,20 +0,0 @@
-// 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 WebUSBDeviceEnumerationOptions_h
-#define WebUSBDeviceEnumerationOptions_h
-
-#include "public/platform/WebVector.h"
-#include "public/platform/modules/webusb/WebUSBDeviceFilter.h"
-
-namespace blink {
-
-// Options which constrain the set of devices returned in device enumeration.
-struct WebUSBDeviceEnumerationOptions {
-    WebVector<WebUSBDeviceFilter> filters;
-};
-
-} // namespace blink
-
-#endif // WebUSBDeviceEnumerationOptions_h