Add path open errors from the permission broker to the device log.

device/usb/usb_device_impl.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 DEVICE_USB_USB_DEVICE_IMPL_H_
 #define DEVICE_USB_USB_DEVICE_IMPL_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 79 matching lines @@
 
   // Called by UsbDeviceHandleImpl.
   void Close(scoped_refptr<UsbDeviceHandle> handle);
   void RefreshActiveConfiguration();
 
  private:
   void GetAllConfigurations();
 #if defined(OS_CHROMEOS)
   void OnOpenRequestComplete(const OpenCallback& callback,
                              dbus::FileDescriptor fd);
+  void OnOpenRequestError(const OpenCallback& callback,
+                          const std::string& error_name,
+                          const std::string& error_message);
   void OpenOnBlockingThreadWithFd(dbus::FileDescriptor fd,
                                   const OpenCallback& callback);
 #endif
   void OpenOnBlockingThread(const OpenCallback& callback);
   void Opened(PlatformUsbDeviceHandle platform_handle,
               const OpenCallback& callback);
 
   base::ThreadChecker thread_checker_;
   PlatformUsbDevice platform_device_;
   bool visited_ = false;
@@ skipping 16 matching lines @@
 
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(UsbDeviceImpl);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_USB_USB_DEVICE_IMPL_H_