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

ppapi/proxy/resource_creation_proxy.cc

Index: ppapi/proxy/resource_creation_proxy.cc
diff --git a/ppapi/proxy/resource_creation_proxy.cc b/ppapi/proxy/resource_creation_proxy.cc
index 89d6504221aae8bb88407e8b66a506540f4567dd..b49bd7a368b1e72a342fb82abbdd7170ce8ea409 100644
--- a/ppapi/proxy/resource_creation_proxy.cc
+++ b/ppapi/proxy/resource_creation_proxy.cc
@@ -303,7 +303,7 @@ PP_Resource ResourceCreationProxy::CreateVideoCapture(PP_Instance instance) {
 PP_Resource ResourceCreationProxy::CreateVideoDecoder(
     PP_Instance instance,
     PP_Resource context3d_id,
-    const PP_VideoConfigElement* config) {
+    const PP_VideoDecoderConfig_Dev& config) {
   return PPB_VideoDecoder_Proxy::CreateProxyResource(
       instance, context3d_id, config);
 }