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

extensions/browser/api/device_permissions_prompt.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_DEVICE_PERMISSIONS_PROMPT_H_
 #define EXTENSIONS_BROWSER_DEVICE_PERMISSIONS_PROMPT_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 88 matching lines @@
 
    private:
     friend struct content::BrowserThread::DeleteOnThread<
         content::BrowserThread::FILE>;
     friend class base::DeleteHelper<Prompt>;
 
     virtual ~Prompt();
 
     // 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);
 
     // device::UsbService::Observer implementation:
     void OnDeviceAdded(scoped_refptr<device::UsbDevice> device) override;
     void OnDeviceRemoved(scoped_refptr<device::UsbDevice> device) override;
 
     const extensions::Extension* extension_;
     content::BrowserContext* browser_context_;
@@ skipping 38 matching lines @@
   // The delegate called after the UI has been dismissed.
   Delegate* delegate_;
 
   // Parameters available to the UI implementation.
   scoped_refptr<Prompt> prompt_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_DEVICE_PERMISSIONS_PROMPT_H_