Fix incorrect API version information.

ppapi/api/ppb_graphics_2d.idl

 /* 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.
  */
 
 /**
  * Defines the <code>PPB_Graphics2D</code> struct representing a 2D graphics
  * context within the browser.
  */
 
 label Chrome {
-  M13 = 0.4,
   M14 = 1.0
 };
 
 /**
  * <code>PPB_Graphics2D</code> defines the interface for a 2D graphics context.
  */
 [macro="PPB_GRAPHICS_2D_INTERFACE"]
 interface PPB_Graphics2D {
   /**
    * Create() creates a 2D graphics context. The returned graphics context will
@@ skipping 225 matching lines @@
 
   /*
    * TODO(): Add back in the synchronous mode description once we have support
    * for it.
    */
   int32_t Flush(
       [in] PP_Resource graphics_2d,
       [in] PP_CompletionCallback callback);
 };