[PPAPI] Fix a bunch of spelling mistakes

ppapi/api/ppb_mouse_cursor.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_MouseCursor</code> interface for setting
  * the mouse cursor.
  */
 
@@ skipping 64 matching lines @@
    * the mouse is over the given instance until it is set again by another
    * call. Note that you can hide the mouse cursor by setting it to the
    * <code>PP_MOUSECURSOR_TYPE_NONE</code> type.
    *
    * This function allows setting both system defined mouse cursors and
    * custom cursors. To set a system-defined cursor, pass the type you want
    * and set the custom image to 0 and the hot spot to NULL. To set a custom
    * cursor, set the type to <code>PP_MOUSECURSOR_TYPE_CUSTOM</code> and
    * specify your image and hot spot.
    *
-   * @param[in] instance A <code>PP_Instance</code> indentifying the instance
+   * @param[in] instance A <code>PP_Instance</code> identifying the instance
    * that the mouse cursor will affect.
    *
    * @param[in] type A <code>PP_MouseCursor_Type</code> identifying the type of
    * mouse cursor to show.
    *
    * @param[in] image A <code>PPB_ImageData</code> resource identifying the
    * custom image to set when the type is
    * <code>PP_MOUSECURSOR_TYPE_CUSTOM</code>. The image must be less than 32
    * pixels in each direction and must be of the system's native image format.
    * When you are specifying a predefined cursor, this parameter must be 0.
    *
-   * @param[in] hot_spot When setting a custom cursor, this idenfifies the
+   * @param[in] hot_spot When setting a custom cursor, this identifies the
    * pixel position within the given image of the "hot spot" of the cursor.
    * When specifying a stock cursor, this parameter is ignored.
    *
    * @return PP_TRUE on success, or PP_FALSE if the instance or cursor type
    * is invalid, or if the image is too large.
    */
   PP_Bool SetCursor([in] PP_Instance instance,
                     [in] PP_MouseCursor_Type type,
                     [in] PP_Resource image,
                     [in] PP_Point hot_spot);
 };