protoc: Change protoc to include generated call option (#6960)

Author: zasweq

balancer/grpclb/grpc_lb_v1/load_balancer_grpc.pb.go

@@ -170,8 +170,8 @@ func generateFileContent(gen *protogen.Plugin, file *protogen.File, g *protogen.
 
 	g.P("// This is a compile-time assertion to ensure that this generated file")
 	g.P("// is compatible with the grpc package it is being compiled against.")
-	g.P("// Requires gRPC-Go v1.32.0 or later.")
-	g.P("const _ = ", grpcPackage.Ident("SupportPackageIsVersion7")) // When changing, update version number above.
+	g.P("// Requires gRPC-Go v1.62.0 or later.")
+	g.P("const _ = ", grpcPackage.Ident("SupportPackageIsVersion8")) // When changing, update version number above.
 	g.P()
 	for _, service := range file.Services {
 		genService(gen, file, g, service)
@@ -309,9 +309,10 @@ func genClientMethod(gen *protogen.Plugin, file *protogen.File, g *protogen.Gene
 		g.P(deprecationComment)
 	}
 	g.P("func (c *", unexport(service.GoName), "Client) ", clientSignature(g, method), "{")
+	g.P("cOpts := append([]", grpcPackage.Ident("CallOption"), "{", grpcPackage.Ident("StaticMethod()"), "}, opts...)")
 	if !method.Desc.IsStreamingServer() && !method.Desc.IsStreamingClient() {
 		g.P("out := new(", method.Output.GoIdent, ")")
-		g.P(`err := c.cc.Invoke(ctx, `, fmSymbol, `, in, out, opts...)`)
+		g.P(`err := c.cc.Invoke(ctx, `, fmSymbol, `, in, out, cOpts...)`)
 		g.P("if err != nil { return nil, err }")
 		g.P("return out, nil")
 		g.P("}")
@@ -320,7 +321,7 @@ func genClientMethod(gen *protogen.Plugin, file *protogen.File, g *protogen.Gene
 	}
 	streamType := unexport(service.GoName) + method.GoName + "Client"
 	serviceDescVar := service.GoName + "_ServiceDesc"
-	g.P("stream, err := c.cc.NewStream(ctx, &", serviceDescVar, ".Streams[", index, `], `, fmSymbol, `, opts...)`)
+	g.P("stream, err := c.cc.NewStream(ctx, &", serviceDescVar, ".Streams[", index, `], `, fmSymbol, `, cOpts...)`)
 	g.P("if err != nil { return nil, err }")
 	g.P("x := &", streamType, "{stream}")
 	if !method.Desc.IsStreamingClient() {