Allow interfaceClass USB device permissions

extensions/common/permissions/usb_device_permission.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_COMMON_PERMISSIONS_USB_DEVICE_PERMISSION_H_
 #define EXTENSIONS_COMMON_PERMISSIONS_USB_DEVICE_PERMISSION_H_
 
 #include <stdint.h>
 
+#include <memory>
+#include <set>
+
 #include "extensions/common/permissions/api_permission.h"
 #include "extensions/common/permissions/set_disjunction_permission.h"
 #include "extensions/common/permissions/usb_device_permission_data.h"
 
 namespace extensions {
 
+class Extension;
+
 class UsbDevicePermission
   : public SetDisjunctionPermission<UsbDevicePermissionData,
                                     UsbDevicePermission> {
  public:
   struct CheckParam : public APIPermission::CheckParam {
-    CheckParam(uint16_t vendor_id, uint16_t product_id, int interface_id)
-        : vendor_id(vendor_id),
-          product_id(product_id),
-          interface_id(interface_id) {}
+    static std::unique_ptr<CheckParam> ForUsbDevice(
+        const Extension* extension,
+        const device::UsbDevice* device);
+    // Creates check param that only checks vendor, product and interface ID
+    // permission properties. It will accept all interfaceClass properties. For
+    // example, created param would always accept {"intefaceClass": 3}
+    // permission, and it would accept {"vendorId": 2, "interfaceClass": 4} iff
+    // |vendor_id| is 2.
+    // Created check param failing means there are no permissions allowing
+    // access to the USB device. On the other hand, created check param passing
+    // does not necessarily mean there is a permission allowing access to the
+    // USB device - one should recheck the permission when complete USB device
+    // info is known.
+    // This is useful when trying to discard devices that do not match any
+    // usbDevice permission when complete USB device info is not known, without
+    // having to fetch available USB devices.
+    static std::unique_ptr<CheckParam> ForDeviceWithAnyInterfaceClass(
+        const Extension* extension,
+        uint16_t vendor_id,
+        uint16_t product_id,
+        int interface_id);
+    static std::unique_ptr<CheckParam> ForUsbDeviceAndInterface(
+        const Extension* extension,
+        const device::UsbDevice* device,
+        int interface_id);
+    static std::unique_ptr<CheckParam> ForHidDevice(const Extension* extension,
+                                                    uint16_t vendor_id,
+                                                    uint16_t product_id);
+
+    CheckParam(const Extension* extesnion,

[meacer, 2016/10/27 00:14:35]

extesnion -> extension

+               uint16_t vendor_id,
+               uint16_t product_id,
+               std::unique_ptr<std::set<int>> interface_classes,
+               int interface_id);
+    ~CheckParam();
+
     const uint16_t vendor_id;
     const uint16_t product_id;
+    const std::unique_ptr<std::set<int>> interface_classes;
     const int interface_id;
+    const bool interface_class_allowed;
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(CheckParam);
   };
 
   explicit UsbDevicePermission(const APIPermissionInfo* info);
   ~UsbDevicePermission() override;
 
   // SetDisjunctionPermission overrides.
   bool FromValue(const base::Value* value,
                  std::string* error,
                  std::vector<std::string>* unhandled_permissions) override;
 
   // APIPermission overrides
   PermissionIDSet GetPermissions() const override;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_PERMISSIONS_USB_DEVICE_PERMISSION_H_