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diff --git a/ppapi/api/dev/ppb_file_chooser_dev.idl b/ppapi/api/dev/ppb_file_chooser_dev.idl
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+/* Copyright (c) 2011 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
+};
+
+/**
+ * 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.
+   */
+  PP_FILECHOOSERMODE_OPEN = 0,
+  /**
+   * Mode for choosing multiple existing files.
+   */
+  PP_FILECHOOSERMODE_OPENMULTIPLE,
+  /**
+   * Mode for choosing a file for saving. If the user selects a file that
+   * doesn't exist, it will be created.
+   */
+  PP_FILECHOOSERMODE_SAVE
+};
+
+interface PPB_FileChooser_Dev {
+ /**
+  * This function creates a file chooser dialog resource.  The chooser is
+  * associated with a particular instance, so that it may be positioned on the
+  * screen relative to the tab containing the instance.
+  *
+  * @param[in] instance A <code>PP_Instance</code> identifying one instance
+  * of a module.
+  * @param[in] mode A <code>PP_FileChooserMode_Dev</code> value that controls
+  * the behavior of the file chooser dialog.
+  * @param[in] accept_mime_types A comma-separated list of MIME types such as
+  * "audio/ *,text/plain" (note there should be no space between the '/' and
+  * the '*', but one is added to avoid confusing C++ comments).  The dialog
+  * may restrict selectable files to the specified MIME types. An empty string
+  * or an undefined var may be given to indicate that all types should be
+  * accepted.
+  *
+  * @return A <code>PP_Resource</code> containing the file chooser if
+  * successful or 0 if it could not be created.
+  */
+  PP_Resource Create(
+      [in] PP_Instance instance,
+      [in] PP_FileChooserMode_Dev mode,
+      [in] PP_Var accept_mime_types);
+
+  /**
+   * Determines if the provided resource is a file chooser.
+   *
+   * @param[in] resource A <code>PP_Resource</code> corresponding to a generic
+   * resource.
+   *
+   * @return A <code>PP_Bool</code> containing containing <code>PP_TRUE</code>
+   * if the given resource is a file chooser resource, otherwise
+   * <code>PP_FALSE</code>.
+   */
+  PP_Bool IsFileChooser(
+      [in] PP_Resource resource);
+
+  /**
+   * 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 an input event that is 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] 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.
+   */
+  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.  Depending on the PP_ChooseFileMode_Dev requested when the
+   * FileChooser was created, the file refs will either be readable or
+   * writable.  Their file system type will be PP_FileSystemType_External.  If
+   * the user chose no files or cancelled 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.
+   */
+  PP_Resource GetNextChosenFile(
+      [in] PP_Resource chooser);
+};
+