added missing grpclb.h dep in build.yaml
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index ce599a6..1612cef 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -896,6 +896,9 @@
<ClInclude Include="$(SolutionDir)\..\src\core\ext\load_reporting\load_reporting_filter.h">
<Filter>src\core\ext\load_reporting</Filter>
</ClInclude>
+ <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\grpclb.h">
+ <Filter>src\core\ext\lb_policy\grpclb</Filter>
+ </ClInclude>
<ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\load_balancer_api.h">
<Filter>src\core\ext\lb_policy\grpclb</Filter>
</ClInclude>