Make the file chooser use PP_ArrayOutput

ppapi/api/dev/ppb_file_chooser_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_FileChooser_Dev</code> interface.
  */
 
 label Chrome {
-  M16 = 0.5
+  M16 = 0.5,
+  M19 = 0.6
 };
 
 /**
  * This enumeration contains constants to control the behavior of the file
  * chooser dialog.
  */
 [assert_size(4)]
 enum PP_FileChooserMode_Dev {
   /**
    * Mode for choosing a single existing file.
@@ skipping 50 matching lines @@
    * with a file (or files) selected, PP_ERROR_USERCANCEL if the user selected
    * no file, or another error code from pp_errors.h on failure.
    *
    * @param[in] chooser The file chooser resource.
    * @param[in] callback A <code>CompletionCallback</code> to be called after
    * the user has closed the file chooser dialog.
    *
    * @return PP_OK_COMPLETIONPENDING if request to show the dialog was
    * successful, another error code from pp_errors.h on failure.
    */
+  [deprecate=0.6]
   int32_t Show(
       [in] PP_Resource chooser,
       [in] PP_CompletionCallback callback);
 
   /**
    * After a successful completion callback call from Show, this method may be
    * used to query the chosen files.  It should be called in a loop until it
    * returns 0.  Their file system type will be PP_FileSystemType_External.  If
    * the user chose no files or canceled the dialog, then this method will
    * simply return 0 the first time it is called.
    *
    * @param[in] chooser The file chooser resource.
    *
    * @return A <code>PP_Resource</code> containing the next file chosen by the
    * user, or 0 if there are no more files.
    */
+  [deprecate=0.6]
   PP_Resource GetNextChosenFile(
       [in] PP_Resource chooser);
+
+  /**
+   * This function displays a previously created file chooser resource as a
+   * dialog box, prompting the user to choose a file or files. This function
+   * must be called in response to a user gesture, such as a mouse click or
+   * touch event. The callback is called with PP_OK on successful completion
+   * with a file (or files) selected, PP_ERROR_USERCANCEL if the user selected
+   * no file, or another error code from pp_errors.h on failure.
+   *
+   * @param[in] chooser The file chooser resource.
+   *
+   * @param[in] output An output array which will receive PP_Resource(s)
+   * identifying the <code>PPB_FileRef</code> objects that the user selected on
+   * success.
+   *
+   * @param[in] callback A <code>CompletionCallback</code> to be called after
+   * the user has closed the file chooser dialog.
+   *
+   * @return PP_OK_COMPLETIONPENDING if request to show the dialog was
+   * successful, another error code from pp_errors.h on failure.
+   */
+  [version=0.6]
+  int32_t Show([in] PP_Resource chooser,
+               [in] PP_ArrayOutput output,
+               [in] PP_CompletionCallback callback);
 };