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reillyg authored
apps::SavedDevicesService tracks USB devices that have been selected by the user in the context of a given extension. Devices that can be identified accurately after they have been reconnected because they have a serial number are written out to ExtensionPrefs. All others are only remembered until they are disconnected. A new OnDisconnect observer function has been added to UsbDevice to enable this monitoring. BUG=346953 Review URL: https://codereview.chromium.org/580963002 Cr-Commit-Position: refs/heads/master@{#295708}
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