gRPC migration

Change-Id: Ib390f6dde0d5a8d6db12ccd7da41135570ad1354
diff --git a/vendor/google.golang.org/grpc/grpclog/logger.go b/vendor/google.golang.org/grpc/grpclog/logger.go
index ef06a48..097494f 100644
--- a/vendor/google.golang.org/grpc/grpclog/logger.go
+++ b/vendor/google.golang.org/grpc/grpclog/logger.go
@@ -18,8 +18,6 @@
 
 package grpclog
 
-import "google.golang.org/grpc/internal/grpclog"
-
 // Logger mimics golang's standard Logger as an interface.
 //
 // Deprecated: use LoggerV2.
@@ -37,7 +35,7 @@
 //
 // Deprecated: use SetLoggerV2.
 func SetLogger(l Logger) {
-	grpclog.Logger = &loggerWrapper{Logger: l}
+	logger = &loggerWrapper{Logger: l}
 }
 
 // loggerWrapper wraps Logger into a LoggerV2.