Make PPAPI headers compilable with -Wstrict-prototypes

ppapi/c/ppb_core.h

 /* 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.
  */
 
-/* From ppb_core.idl modified Wed Oct  5 14:06:02 2011. */
+/* From ppb_core.idl modified Mon Mar 19 12:02:10 2012. */
 
 #ifndef PPAPI_C_PPB_CORE_H_
 #define PPAPI_C_PPB_CORE_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_time.h"
@@ skipping 34 matching lines @@
    * resource.
    */
   void (*ReleaseResource)(PP_Resource resource);
   /**
    * GetTime() returns the "wall clock time" according to the
    * browser.
    *
    * @return A <code>PP_Time</code> containing the "wall clock time" according
    * to the browser.
    */
-  PP_Time (*GetTime)();
+  PP_Time (*GetTime)(void);
   /**
    * GetTimeTicks() returns the "tick time" according to the browser.
    * This clock is used by the browser when passing some event times to the
    * module (e.g. using the <code>PP_InputEvent::time_stamp_seconds</code>
    * field). It is not correlated to any actual wall clock time
    * (like GetTime()). Because of this, it will not run change if the user
    * changes their computer clock.
    *
    * @return A <code>PP_TimeTicks</code> containing the "tick time" according
    * to the browser.
    */
-  PP_TimeTicks (*GetTimeTicks)();
+  PP_TimeTicks (*GetTimeTicks)(void);
   /**
    * CallOnMainThread() schedules work to be executed on the main module thread
    * after the specified delay. The delay may be 0 to specify a call back as
    * soon as possible.
    *
    * The <code>result</code> parameter will just be passed as the second
    * argument to the callback. Many applications won't need this, but it allows
    * a module to emulate calls of some callbacks which do use this value.
    *
    * <strong>Note:</strong> CallOnMainThread, even when used from the main
@@ skipping 16 matching lines @@
   /**
    * IsMainThread() returns true if the current thread is the main pepper
    * thread.
    *
    * This function is useful for implementing sanity checks, and deciding if
    * dispatching using CallOnMainThread() is required.
    *
    * @return A <code>PP_Bool</code> containing <code>PP_TRUE</code> if the
    * current thread is the main pepper thread, otherwise <code>PP_FALSE</code>.
    */
-  PP_Bool (*IsMainThread)();
+  PP_Bool (*IsMainThread)(void);
 };
 
 typedef struct PPB_Core_1_0 PPB_Core;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PPB_CORE_H_ */