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chrome/common/extensions/api/usb.idl

 // Copyright (c) 2012 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.
 
+// Use the <code>chrome.usb</code> module to interact with connected USB
+// devices. This API provides access to USB operations from within the context
+// of an app. Using this API, apps can function as drivers for hardware devices.
+
 namespace usb {
 
   // Direction, Recipient and RequestType all map to their namesakes within the
   // USB specification.
   enum Direction {in, out};
   enum Recipient {device, _interface, endpoint, other};
   enum RequestType {standard, class, vendor, reserved};
 
   // A Device encapsulates everything that is needed to communicate with a USB
   // device. They are returned by findDevice calls and have all of their
@@ skipping 164 matching lines @@
     // will appear to be disconected and reconnected.
     // You must call <code>findDevice</code> again to acquire the device.
     //
     // |device|: An opened device to reset.
     // |callback|: Invoked once the device is reset with a boolean indicating
     // whether the reset is completed successfully.
     static void resetDevice(Device device,
         ResetDeviceCallback callback);
   };
 };