[GCM] Fix gcm login to properly identify chrome

google_apis/gcm/base/mcs_message_unittest.cc

Index: google_apis/gcm/base/mcs_message_unittest.cc
diff --git a/google_apis/gcm/base/mcs_message_unittest.cc b/google_apis/gcm/base/mcs_message_unittest.cc
index 07f1d7da24c9a4cb616dbaad919820e68449c6ff..0dbebc7cc45cf55183dce9261cfb6f40d82d99de 100644
--- a/google_apis/gcm/base/mcs_message_unittest.cc
+++ b/google_apis/gcm/base/mcs_message_unittest.cc
@@ -37,7 +37,7 @@ TEST_F(MCSMessageTest, Invalid) {
 TEST_F(MCSMessageTest, InitInferTag) {
   std::vector<int64> user_serial_numbers;
   scoped_ptr<mcs_proto::LoginRequest> login_request(
-      BuildLoginRequest(kAndroidId, kSecret, user_serial_numbers));
+      BuildLoginRequest(kAndroidId, kSecret, "", user_serial_numbers));
   scoped_ptr<google::protobuf::MessageLite> login_copy(
       new mcs_proto::LoginRequest(*login_request));
   MCSMessage message(*login_copy);
@@ -56,7 +56,7 @@ TEST_F(MCSMessageTest, InitInferTag) {
 TEST_F(MCSMessageTest, InitWithTag) {
   std::vector<int64> user_serial_numbers;
   scoped_ptr<mcs_proto::LoginRequest> login_request(
-      BuildLoginRequest(kAndroidId, kSecret, user_serial_numbers));
+      BuildLoginRequest(kAndroidId, kSecret, "", user_serial_numbers));
   scoped_ptr<google::protobuf::MessageLite> login_copy(
       new mcs_proto::LoginRequest(*login_request));
   MCSMessage message(kLoginRequestTag, *login_copy);
@@ -75,7 +75,7 @@ TEST_F(MCSMessageTest, InitWithTag) {
 TEST_F(MCSMessageTest, InitPassOwnership) {
   std::vector<int64> user_serial_numbers;
   scoped_ptr<mcs_proto::LoginRequest> login_request(
-      BuildLoginRequest(kAndroidId, kSecret, user_serial_numbers));
+      BuildLoginRequest(kAndroidId, kSecret, "", user_serial_numbers));
   scoped_ptr<google::protobuf::MessageLite> login_copy(
       new mcs_proto::LoginRequest(*login_request));
   MCSMessage message(kLoginRequestTag,