Add WebUSB bindings and client interface

public/platform/modules/webusb/WebUSBDeviceInfo.h

+// Copyright 2015 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 WebUSBDeviceInfo_h
+#define WebUSBDeviceInfo_h
+
+#include "public/platform/WebString.h"
+#include "public/platform/WebVector.h"
+#include "public/platform/modules/webusb/WebUSBDevice.h"
+
+namespace blink {
+
+struct WebUSBDeviceInfo {
+    struct Endpoint {
+        enum Type {
+            TypeBulk,
+            TypeInterrupt,
+            TypeIsochronous
+        };
+
+        Endpoint()
+            : endpointNumber(0)
+            , direction(WebUSBDevice::TransferDirectionIn)
+            , type(TypeBulk)
+            , packetSize(0)
+        {
+        }
+
+        uint8_t endpointNumber;
+        WebUSBDevice::TransferDirection direction;
+        Type type;
+        uint32_t packetSize;
+    };
+
+    struct AlternateInterface {
+        AlternateInterface()
+            : alternateSetting(0)
+            , classCode(0)
+            , subclassCode(0)
+            , protocolCode(0)
+        {
+        }
+
+        uint8_t alternateSetting;
+        uint8_t classCode;
+        uint8_t subclassCode;
+        uint8_t protocolCode;
+        WebString interfaceName;
+        WebVector<Endpoint> endpoints;
+    };
+
+    struct Interface {
+        Interface()
+            : interfaceNumber(0)
+        {
+        }
+
+        uint8_t interfaceNumber;
+        WebVector<AlternateInterface> alternates;
+    };
+
+    struct Configuration {
+        Configuration()
+            : configurationValue(0)
+        {
+        }
+
+        uint8_t configurationValue;
+        WebString configurationName;
+        WebVector<Interface> interfaces;
+    };
+
+    WebUSBDeviceInfo()
+        : usbVersionMajor(0)
+        , usbVersionMinor(0)
+        , usbVersionSubminor(0)
+        , deviceClass(0)
+        , deviceSubclass(0)
+        , deviceProtocol(0)
+        , vendorID(0)
+        , productID(0)
+        , deviceVersionMajor(0)
+        , deviceVersionMinor(0)
+        , deviceVersionSubminor(0)
+    {
+    }
+
+    WebString guid;
+    uint8_t usbVersionMajor;
+    uint8_t usbVersionMinor;
+    uint8_t usbVersionSubminor;
+    uint8_t deviceClass;
+    uint8_t deviceSubclass;
+    uint8_t deviceProtocol;
+    uint16_t vendorID;
+    uint16_t productID;
+    uint8_t deviceVersionMajor;
+    uint8_t deviceVersionMinor;
+    uint8_t deviceVersionSubminor;
+    WebString manufacturerName;
+    WebString productName;
+    WebString serialNumber;
+    WebVector<Configuration> configurations;
+};
+
+} // namespace blink
+
+#endif // WebUSBDeviceInfo_h