Work on improving PpbAudioConfig:RecommendSampleFrameCount

ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc

Index: ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc
===================================================================
--- ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc	(revision 118765)
+++ ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc	(working copy)
@@ -203,6 +203,7 @@
 
 NaClSrpcError PpbAudioConfigRpcClient::PPB_AudioConfig_RecommendSampleFrameCount(
     NaClSrpcChannel* channel,
+    PP_Instance instance,
     int32_t request_sample_rate,
     int32_t request_sample_frame_count,
     int32_t* out_sample_frame_count)  {
@@ -212,7 +213,8 @@
   NaClSrpcError retval;
   retval = NaClSrpcInvokeBySignature(
       channel,
-      "PPB_AudioConfig_RecommendSampleFrameCount:ii:i",
+      "PPB_AudioConfig_RecommendSampleFrameCount:iii:i",
+      instance,
       request_sample_rate,
       request_sample_frame_count,
       out_sample_frame_count
@@ -254,6 +256,23 @@
   return retval;
 }
 
+NaClSrpcError PpbAudioConfigRpcClient::PPB_AudioConfig_RecommendSampleRate(
+    NaClSrpcChannel* channel,
+    PP_Instance instance,
+    int32_t* sample_rate)  {
+  VCHECK(ppapi_proxy::PPBCoreInterface()->IsMainThread(),
+         ("%s: PPAPI calls are not supported off the main thread\n",
+          __FUNCTION__));
+  NaClSrpcError retval;
+  retval = NaClSrpcInvokeBySignature(
+      channel,
+      "PPB_AudioConfig_RecommendSampleRate:i:i",
+      instance,
+      sample_rate
+  );
+  return retval;
+}
+
 NaClSrpcError PpbCoreRpcClient::PPB_Core_AddRefResource(
     NaClSrpcChannel* channel,
     PP_Resource resource)  {