goprotobuf: update to go 1 import strings

R=dsymonds
CC=golang-dev
http://codereview.appspot.com/5496065
diff --git a/proto/equal_test.go b/proto/equal_test.go
index fd347af..8dd5d29 100644
--- a/proto/equal_test.go
+++ b/proto/equal_test.go
@@ -35,8 +35,8 @@
 	"log"
 	"testing"
 
-	. "goprotobuf.googlecode.com/hg/proto"
 	pb "./testdata/_obj/test_proto"
+	. "code.google.com/p/goprotobuf/proto"
 )
 
 // Four identical base messages.