Replace the deprecated grpc_call_accept calls with the equivalent two new

calls.
	Change on 2014/12/17 by yangg <yangg@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=82368034

src/cpp/server/async_server_context.cc

@@ -54,7 +54,8 @@ AsyncServerContext::AsyncServerContext(
 AsyncServerContext::~AsyncServerContext() { grpc_call_destroy(call_); }
 
 void AsyncServerContext::Accept(grpc_completion_queue* cq) {
-  grpc_call_accept(call_, cq, this, 0);
+  GPR_ASSERT(grpc_call_server_accept(call_, cq, this) == GRPC_CALL_OK);
+  GPR_ASSERT(grpc_call_server_end_initial_metadata(call_, 0) == GRPC_CALL_OK);
 }
 
 bool AsyncServerContext::StartRead(google::protobuf::Message* request) {

src/cpp/stream/stream_context.cc

@@ -89,8 +89,10 @@ void StreamContext::Start(bool buffered) {
   } else {
     // TODO(yangg) metadata needs to be added before accept
     // TODO(yangg) correctly set flag to accept
-    grpc_call_error error = grpc_call_accept(call(), cq(), finished_tag(), 0);
+    GPR_ASSERT(grpc_call_server_accept(call(), cq(), finished_tag()) ==
-    GPR_ASSERT(GRPC_CALL_OK == error);
+               GRPC_CALL_OK);
+    GPR_ASSERT(grpc_call_server_end_initial_metadata(call(), 0) ==
+               GRPC_CALL_OK);
   }
 }