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

ppapi/cpp/dev/video_decoder_dev.h

Index: ppapi/cpp/dev/video_decoder_dev.h
diff --git a/ppapi/cpp/dev/video_decoder_dev.h b/ppapi/cpp/dev/video_decoder_dev.h
index 504e71332080a05a58c3c5fbd5a7df656ab3ec07..e2600504688ce8cc53554c275abdfcc123613e96 100644
--- a/ppapi/cpp/dev/video_decoder_dev.h
+++ b/ppapi/cpp/dev/video_decoder_dev.h
@@ -25,12 +25,12 @@ class Instance;
 class VideoDecoder_Dev : public Resource {
  public:
   // See PPB_VideoDecoder_Dev::Create.
-  VideoDecoder_Dev(const Instance& instance,
+  VideoDecoder_Dev(const Instance* instance,
                    const Context3D_Dev& context,
-                   const PP_VideoConfigElement* config);
-  VideoDecoder_Dev(const Instance& instance,
+                   PP_VideoDecoder_Profile profile);
+  VideoDecoder_Dev(const Instance* instance,
                    const Graphics3D_Dev& context,
-                   const PP_VideoConfigElement* config);
+                   PP_VideoDecoder_Profile profile);
 
   explicit VideoDecoder_Dev(PP_Resource resource);
   virtual ~VideoDecoder_Dev();