Update PPB_VideoDecoder documentation.

ppapi/c/ppb_video_decoder.h

 /* Copyright (c) 2014 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_video_decoder.idl modified Tue May  6 05:19:45 2014. */
+/* From ppb_video_decoder.idl modified Mon May 19 18:06:32 2014. */
 
 #ifndef PPAPI_C_PPB_VIDEO_DECODER_H_
 #define PPAPI_C_PPB_VIDEO_DECODER_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_codecs.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_resource.h"
@@ skipping 76 matching lines @@
    * requested profile is not supported. In this case, the client may call
    * Initialize() again with different parameters to find a good configuration.
    */
   int32_t (*Initialize)(PP_Resource video_decoder,
                         PP_Resource graphics3d_context,
                         PP_VideoProfile profile,
                         PP_Bool allow_software_fallback,
                         struct PP_CompletionCallback callback);
   /**
    * Decodes a bitstream buffer. Copies |size| bytes of data from the plugin's
-   * |buffer|. The plugin should maintain the buffer and not call Decode() again
-   * until the decoder signals completion by returning PP_OK or by running
-   * |callback|.
+   * |buffer|. The plugin should wait until the decoder signals completion by
+   * returning PP_OK or by running |callback| before calling Decode() again.
    *
    * In general, each bitstream buffer should contain a demuxed bitstream frame
    * for the selected video codec. For example, H264 decoders expect to receive
    * one AnnexB NAL unit, including the 4 byte start code prefix, while VP8
    * decoders expect to receive a bitstream frame without the IVF frame header.
    *
    * If the call to Decode() eventually results in a picture, the |decode_id|
    * parameter is copied into the returned picture. The plugin can use this to
    * associate decoded pictures with Decode() calls (e.g. to assign timestamps
    * or frame numbers to pictures.) This value is opaque to the API so the
@@ skipping 84 matching lines @@
    */
   int32_t (*Reset)(PP_Resource video_decoder,
                    struct PP_CompletionCallback callback);
 };
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PPB_VIDEO_DECODER_H_ */