Implement basic USB device enumeration on Android.

device/usb/usb.gyp

 # Copyright 2013 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'device_usb',
       'type': 'static_library',
       'dependencies': [
         '../../components/components.gyp:device_event_log_component',
         '../../net/net.gyp:net',
         '../../third_party/libusb/libusb.gyp:libusb',
         '../core/core.gyp:device_core',
       ],
       'include_dirs': [
         '../..',
       ],
       'sources': [
+        'android/usb_jni_registrar.cc',
+        'android/usb_jni_registrar.h',
+        'usb_configuration_android.cc',
+        'usb_configuration_android.h',
         'usb_context.cc',
         'usb_context.h',
         'usb_descriptors.cc',
         'usb_descriptors.h',
         'usb_device_impl.cc',
         'usb_device_impl.h',
         'usb_device.cc',
         'usb_device.h',
+        'usb_device_android.cc',
+        'usb_device_android.h',
         'usb_device_filter.cc',
         'usb_device_filter.h',
         'usb_device_handle_impl.cc',
         'usb_device_handle_impl.h',
         'usb_device_handle.cc',
         'usb_device_handle.h',
+        'usb_endpoint_android.cc',
+        'usb_endpoint_android.h',
         'usb_error.cc',
         'usb_error.h',
         'usb_ids.cc',
         'usb_ids.h',
+        'usb_interface_android.cc',
+        'usb_interface_android.h',
         'usb_service.cc',
         'usb_service.h',
+        'usb_service_android.cc',
+        'usb_service_android.h',
         'usb_service_impl.cc',
         'usb_service_impl.h',
         'webusb_descriptors.cc',
         'webusb_descriptors.h',
       ],
       'actions': [
         {
           'action_name': 'generate_usb_ids',
           'variables': {
             'usb_ids_path%': '../../third_party/usb_ids/usb.ids',
@@ skipping 15 matching lines @@
           'process_outputs_as_sources': 1,
         },
       ],
       'conditions': [
         ['use_udev == 1', {
           'dependencies': [
             '../udev_linux/udev.gyp:udev_linux',
           ],
         }],
         ['OS=="android"', {
+          'dependencies': [
+            'device_usb_java',
+            'device_usb_jni_headers',
+          ],
           'dependencies!': [
             '../../third_party/libusb/libusb.gyp:libusb',
           ],
-          'sources': [
-            'usb_service_android.cc',
-            'usb_service_android.h',
-          ],
+          # These sources are libusb-specific.
           'sources!': [
             'usb_context.cc',
             'usb_context.h',
             'usb_device_handle_impl.cc',
             'usb_device_handle_impl.h',
             'usb_device_impl.cc',
             'usb_device_impl.h',
             'usb_error.cc',
             'usb_error.h',
             'usb_service_impl.cc',
@@ skipping 20 matching lines @@
       'sources': [
         'mock_usb_device.cc',
         'mock_usb_device.h',
         'mock_usb_device_handle.cc',
         'mock_usb_device_handle.h',
         'mock_usb_service.cc',
         'mock_usb_service.h',
       ],
     },
   ],
+  'conditions': [
+    ['OS == "android"', {
+      'targets': [
+        {
+          'target_name': 'device_usb_jni_headers',
+          'type': 'none',
+          'sources': [
+            'android/java/src/org/chromium/device/usb/ChromeUsbConfiguration.java',
+            'android/java/src/org/chromium/device/usb/ChromeUsbDevice.java',
+            'android/java/src/org/chromium/device/usb/ChromeUsbEndpoint.java',
+            'android/java/src/org/chromium/device/usb/ChromeUsbInterface.java',
+            'android/java/src/org/chromium/device/usb/ChromeUsbService.java',
+          ],
+          'variables': {
+            'jni_gen_package': 'device_usb',
+          },
+          'includes': [ '../../build/jni_generator.gypi' ],
+        },
+        {
+          'target_name': 'device_usb_java',
+          'type': 'none',
+          'dependencies': [
+            'usb_descriptors_javagen',
+            '../../base/base.gyp:base',
+          ],
+          'variables': {
+            'java_in_dir': '../../device/usb/android/java',
+          },
+          'includes': [ '../../build/java.gypi' ],
+        },
+        {
+          'target_name': 'usb_descriptors_javagen',
+          'type': 'none',
+          'variables': {
+            'source_file': 'usb_descriptors.h',
+          },
+          'includes': [ '../../build/android/java_cpp_enum.gypi' ],
+        },
+      ],
+    }],
+  ],
 }