Implement PPB_DeviceRef_Dev.

ppapi/api/dev/ppb_device_ref_dev.idl

+/* Copyright (c) 2012 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.
+ */
+
+/**
+ * This file defines the <code>PPB_DeviceRef_Dev</code> interface.
+ */
+label Chrome {
+  M18 = 0.1
+};
+
+/**
+ * Device types.
+ */
+[assert_size(4)]
+enum PP_DeviceType_Dev {
+  PP_DEVICETYPE_INVALID = 0,
+  PP_DEVICETYPE_AUDIOCAPTURE = 1,
+  PP_DEVICETYPE_VIDEOCAPTURE = 2

[dmichael (off chromium), 2012/01/20 19:35:58]

If you think you might take it out of DEV eventually, I'd recommend appending
_DEV to the enum names. Since these go in the global namespace, it can be a pain
to move an enum out of Dev if you need to support old & new.

[yzshen1, 2012/01/20 21:19:36]

Done.

+};
+
+interface PPB_DeviceRef_Dev {
+  /**
+   * Determines if the provided resource is a device reference.
+   *
+   * @param[in] resource A <code>PP_Resource</code> corresponding to a generic
+   * resource.
+   *
+   * @return A <code>PP_Bool</code> that is <code>PP_TRUE</code> if the given
+   * resource is a device reference, otherwise <code>PP_FALSE</code>.
+   */
+  PP_Bool IsDeviceRef([in] PP_Resource resource);
+
+  /**
+   * Gets the device type.
+   *
+   * @param[in] device_ref A <code>PP_Resource</code> corresponding to a device
+   * reference.
+   *
+   * @return A <code>PP_DeviceType_Dev</code> value.
+   */
+  PP_DeviceType_Dev GetType([in] PP_Resource device_ref);
+
+  /**
+   * Gets the device name.
+   *
+   * @param[in] device_ref A <code>PP_Resource</code> corresponding to a device
+   * reference.
+   *
+   * @return A <code>PP_Var</code> containing the name of the device.

[viettrungluu, 2012/01/20 18:30:59]

You should probably specify that this is a string var (or a null var in case of
error?).

[yzshen1, 2012/01/20 19:24:49]

Done.

+   */
+  PP_Var GetName([in] PP_Resource device_ref);
+};