| juncai | 4cbad6e | 2016-03-25 20:40:35 | [diff] [blame] | 1 | // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef CHROME_BROWSER_USB_WEB_USB_HISTOGRAMS_H_ |
| 6 | #define CHROME_BROWSER_USB_WEB_USB_HISTOGRAMS_H_ |
| 7 | |
| 8 | // Reasons the chooser may be closed. These are used in histograms so do not |
| 9 | // remove/reorder entries. Only add at the end just before |
| 10 | // WEBUSB_CHOOSER_CLOSED_MAX. Also remember to update the enum listing in |
| 11 | // tools/metrics/histograms/histograms.xml. |
| 12 | enum WebUsbChooserClosed { |
| 13 | // The user cancelled the permission prompt without selecting a device. |
| 14 | WEBUSB_CHOOSER_CLOSED_CANCELLED = 0, |
| 15 | // The user probably cancelled the permission prompt without selecting a |
| 16 | // device because there were no devices to select. |
| 17 | WEBUSB_CHOOSER_CLOSED_CANCELLED_NO_DEVICES, |
| 18 | // The user granted permission to access a device. |
| 19 | WEBUSB_CHOOSER_CLOSED_PERMISSION_GRANTED, |
| 20 | // The user granted permission to access a device but that permission will be |
| 21 | // revoked when the device is disconnected. |
| 22 | WEBUSB_CHOOSER_CLOSED_EPHEMERAL_PERMISSION_GRANTED, |
| 23 | // Maximum value for the enum. |
| 24 | WEBUSB_CHOOSER_CLOSED_MAX |
| 25 | }; |
| 26 | |
| 27 | void RecordWebUsbChooserClosure(WebUsbChooserClosed disposition); |
| 28 | |
| 29 | #endif // CHROME_BROWSER_USB_WEB_USB_HISTOGRAMS_H_ |
