Fixes crashing in RequestUsbDevicesAccess

chrome/browser/usb/usb_device.h

 // Copyright 2013 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 CHROME_BROWSER_USB_USB_DEVICE_H_
 #define CHROME_BROWSER_USB_USB_DEVICE_H_
 
 #include <vector>
 
@@ skipping 55 matching lines @@
             uint16 product_id,
             uint32 unique_id);
 
   // Constructor called in test only.
   UsbDevice();
   virtual ~UsbDevice();
 
   // Called only be UsbService.
   virtual void OnDisconnect();
 
-#if defined(OS_CHROMEOS)
-  // This method is called when permission broker replied our request.
-  // We will simply relay it to FILE thread.
-  // |callback| comes first because it will be base::Bind'ed.
-  void OnRequestUsbAccessReplied(
-      const base::Callback<void(bool success)>& callback,
-      bool success);
-#endif  // OS_CHROMEOS
-
  private:
   PlatformUsbDevice platform_device_;
   uint16 vendor_id_;
   uint16 product_id_;
   uint32 unique_id_;
 
   // Retain the context so that it will not be released before UsbDevice.
   scoped_refptr<UsbContext> context_;
 
   // Opened handles.
   typedef std::vector<scoped_refptr<UsbDeviceHandle> > HandlesVector;
   HandlesVector handles_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(UsbDevice);
 };
 
 #endif  // CHROME_BROWSER_USB_USB_DEVICE_H_