PPAPI: implement GetSupportedPreviewSizes

ppapi/api/private/ppb_image_capture_config_private.idl

 /* 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.
  */
 
 /**
  * This file defines the PPB_ImageCaptureConfig_Private interface for
  * establishing an image capture configuration resource within the browser.
  */
 
 [generate_thunk]
 
 label Chrome {
-  M39 = 0.1
+  M42 = 0.1
 };
 
 /**
  * The <code>PPB_ImageCaptureConfig_Private</code> interface contains pointers
  * to several functions for establishing image capture configuration within the
  * browser. The new configuration will take effect after <code>
  * PPB_ImageCapture_Private.SetConfig</code> is called.
  */
 [version=0.1]
 interface PPB_ImageCaptureConfig_Private {
@@ skipping 67 matching lines @@
    *
    * @param[in] config A <code>PP_Resource</code> corresponding to a
    * <code>PPB_ImageCaptureConfig_Private</code>.
    * @param[in] jpeg_size A <code>PP_Size</code> that indicates the requested
    * JPEG image size.
    */
   void SetJpegSize(
       [in] PP_Resource config,
       [in] PP_Size jpeg_size);
 };