Check USB device path access when prompting users to select a device.

extensions/browser/api/device_permissions_prompt.h

Index: extensions/browser/api/device_permissions_prompt.h
diff --git a/extensions/browser/api/device_permissions_prompt.h b/extensions/browser/api/device_permissions_prompt.h
index 3ef2587695ebefb38bc51f3c4ed7c4e9669cc043..e7d11ca901478736a67c8427eed90d70768b8a52 100644
--- a/extensions/browser/api/device_permissions_prompt.h
+++ b/extensions/browser/api/device_permissions_prompt.h
@@ -106,6 +106,13 @@ class DevicePermissionsPrompt {
 
     // Querying for devices must be done asynchronously on the FILE thread.
     void DoDeviceQuery();
+    void AppendCheckedUsbDevice(std::vector<DeviceInfo>* device_info,
+                                scoped_refptr<device::UsbDevice> device,
+                                const base::Closure& callback,
+                                bool allowed);
+    void AddCheckedUsbDevice(scoped_refptr<device::UsbDevice> device,
+                             bool allowed);
+    void DeviceQueryComplete(std::vector<DeviceInfo>* device_info);
     void SetDevices(const std::vector<DeviceInfo>& devices);
     void AddDevice(const DeviceInfo& device);
     void RemoveDevice(scoped_refptr<device::UsbDevice> device);