Add configuration and interface permission checks to DeviceImpl.

device/usb/usb_device.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_H_
 #define DEVICE_USB_USB_DEVICE_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 26 matching lines @@
   uint16_t product_id() const { return product_id_; }
   const base::string16& manufacturer_string() const {
     return manufacturer_string_;
   }
   const base::string16& product_string() const { return product_string_; }
   const base::string16& serial_number() const { return serial_number_; }
   const WebUsbDescriptorSet* webusb_allowed_origins() const {
     return webusb_allowed_origins_.get();
   }
   const GURL& webusb_landing_page() const { return webusb_landing_page_; }
+  const std::vector<UsbConfigDescriptor>& configurations() const {
+    return configurations_;
+  }
 
   // On ChromeOS the permission_broker service is used to change the ownership
   // of USB device nodes so that Chrome can open them. On other platforms these
   // functions are no-ops and always return true.
   virtual void CheckUsbAccess(const ResultCallback& callback);
 
   // Creates a UsbDeviceHandle for further manipulation.
   virtual void Open(const OpenCallback& callback) = 0;
 
   // Explicitly closes a device handle. This method will be automatically called
   // by the destructor of a UsbDeviceHandle as well.
   virtual bool Close(scoped_refptr<UsbDeviceHandle> handle) = 0;
 
   // Gets the UsbConfigDescriptor for the active device configuration or nullptr
   // if the device is unconfigured.
   virtual const UsbConfigDescriptor* GetActiveConfiguration() = 0;
 
-  // Gets all of the device's UsbConfigDescriptors.
-  const std::vector<UsbConfigDescriptor>& configurations() const {
-    return configurations_;
-  }
-
  protected:
   UsbDevice(uint16_t vendor_id,
             uint16_t product_id,
             const base::string16& manufacturer_string,
             const base::string16& product_string,
             const base::string16& serial_number);
   virtual ~UsbDevice();
 
   // These members must be mutable by subclasses as necessary during device
   // enumeration. To preserve the thread safety of this object they must remain
@@ skipping 13 matching lines @@
   const std::string guid_;
   const uint16_t vendor_id_;
   const uint16_t product_id_;
 
   DISALLOW_COPY_AND_ASSIGN(UsbDevice);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_USB_USB_DEVICE_H_