More trivial cleanupi of ppapi/c headers

ppapi/c/ppp_input_event.h

 /* 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.
  */
 
+/* From ppp_input_event.idl modified Wed Jul 13 17:03:43 2011. */
+
 #ifndef PPAPI_C_PPP_INPUT_EVENT_H_
 #define PPAPI_C_PPP_INPUT_EVENT_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
+#include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_resource.h"
+#include "ppapi/c/pp_stdint.h"
 
+/**
+ * @file
+ * This file defines the API for receiving input events form the browser.
+ */
+
+
+/**
+ * @addtogroup Interfaces
+ * @{
+ */
 #define PPP_INPUT_EVENT_INTERFACE_0_1 "PPP_InputEvent;0.1"
 #define PPP_INPUT_EVENT_INTERFACE PPP_INPUT_EVENT_INTERFACE_0_1
 
 struct PPP_InputEvent {
   /**
    * Function for receiving input events from the browser.
    *
    * In order to receive input events, you must register for them by calling
    * PPB_InputEvent.RequestInputEvents() or RequestFilteringInputEvents(). By
    * default, no events are delivered.
    *
    * In general, you should try to keep input event handling short. Especially
    * for filtered input events, the browser or page may be blocked waiting for
    * you to respond.
    *
    * The caller of this function will maintain a reference to the input event
    * resource during this call. Unless you take a reference to the resource
    * to hold it for later, you don't need to release it.
    *
    * @return PP_TRUE if the event was handled, PP_FALSE if not. If you have
    * registered to filter this class of events by calling
    * RequestFilteringInputEvents, and you return PP_FALSE, the event will
    * be forwarded to the page (and eventually the browser) for the default
    * handling. For non-filtered events, the return value will be ignored.
    */
   PP_Bool (*HandleInputEvent)(PP_Instance instance, PP_Resource input_event);
 };
+/**
+ * @}
+ */
 
 #endif  /* PPAPI_C_PPP_INPUT_EVENT_H_ */
+