Use interface associations to check function permissions.

device/usb/usb_device_handle.h

Index: device/usb/usb_device_handle.h
diff --git a/device/usb/usb_device_handle.h b/device/usb/usb_device_handle.h
index 31f0ec5f3f122640f861f32d5068a0628f55718f..722296400029da488d649c93c97e6507c56cf6e5 100644
--- a/device/usb/usb_device_handle.h
+++ b/device/usb/usb_device_handle.h
@@ -111,10 +111,10 @@ class UsbDeviceHandle : public base::RefCountedThreadSafe<UsbDeviceHandle> {
                                unsigned int timeout,
                                const TransferCallback& callback) = 0;
 
-  // Gets the interface containing |endpoint_address|. Returns false if no
+  // Gets the interface containing |endpoint_address|. Returns nullptr if no
   // claimed interface contains that endpoint.
-  virtual bool FindInterfaceByEndpoint(uint8_t endpoint_address,
-                                       uint8_t* interface_number) = 0;
+  virtual const UsbInterfaceDescriptor* FindInterfaceByEndpoint(
+      uint8_t endpoint_address) = 0;
 
  protected:
   friend class base::RefCountedThreadSafe<UsbDeviceHandle>;