Implement basic USB device enumeration on Android.

device/usb/usb_interface_android.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 DEVICE_USB_USB_INTERFACE_ANDROID_H_
+#define DEVICE_USB_USB_INTERFACE_ANDROID_H_
+
+#include "base/android/scoped_java_ref.h"
+#include "device/usb/usb_descriptors.h"
+
+namespace device {
+
+class UsbInterfaceAndroid {
+ public:
+  // Register C++ methods exposed to Java using JNI.
+  static bool RegisterJNI(JNIEnv* env);
+
+  static UsbInterfaceDescriptor Convert(
+      JNIEnv* env,
+      const base::android::JavaRef<jobject>& usb_interface);
+};
+
+}  // namespace device
+
+#endif  // DEVICE_USB_USB_INTERFACE_ANDROID_H_