Replace the use of an int32* with a proper struct for decoder configuration.

ppapi/shared_impl/video_decoder_impl.h

Index: ppapi/shared_impl/video_decoder_impl.h
diff --git a/ppapi/shared_impl/video_decoder_impl.h b/ppapi/shared_impl/video_decoder_impl.h
index b71f27dea33a391d91f1f664562551950c006998..10607403ab47f60ce53b1455e2305897fe39a442 100644
--- a/ppapi/shared_impl/video_decoder_impl.h
+++ b/ppapi/shared_impl/video_decoder_impl.h
@@ -39,11 +39,6 @@ class PPAPI_SHARED_EXPORT VideoDecoderImpl
   // PPB_VideoDecoder_API implementation.
   virtual void Destroy() OVERRIDE;
 
-  // Copy C-style config list into |out_configs| vector.
-  static bool CopyConfigsToVector(
-      const PP_VideoConfigElement* configs_to_copy,
-      std::vector<PP_VideoConfigElement>* out_configs);
-
  protected:
   bool SetFlushCallback(PP_CompletionCallback callback);
   bool SetResetCallback(PP_CompletionCallback callback);