Add 3 more registartion status codes for UMA collection. Also added tests.

google_apis/gcm/engine/registration_request_unittest.cc

Index: google_apis/gcm/engine/registration_request_unittest.cc
diff --git a/google_apis/gcm/engine/registration_request_unittest.cc b/google_apis/gcm/engine/registration_request_unittest.cc
index 178c135583950f4225513b0d5b0cbe38ee1c9001..62b8717d2a8dd9944cb78c919f02a8b942c4d02f 100644
--- a/google_apis/gcm/engine/registration_request_unittest.cc
+++ b/google_apis/gcm/engine/registration_request_unittest.cc
@@ -10,6 +10,7 @@
 #include "base/strings/string_tokenizer.h"
 #include "google_apis/gcm/engine/registration_request.h"
 #include "net/url_request/test_url_fetcher_factory.h"
+#include "net/url_request/url_request_status.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -311,4 +312,45 @@ TEST_F(RegistrationRequestTest, ResponseInvalidSender) {
   EXPECT_EQ(std::string(), registration_id_);
 }
 
+TEST_F(RegistrationRequestTest, RequestNotSucessful) {
+  CreateRequest("sender1,sender2");
+  request_->Start();
+
+  net::URLRequestStatus request_status(net::URLRequestStatus::FAILED, 1);
+  SetResponseStatusAndString(net::HTTP_OK, "token=2501");
+  net::TestURLFetcher* fetcher = url_fetcher_factory_.GetFetcherByID(0);
+  ASSERT_TRUE(fetcher);
+  fetcher->set_status(request_status);
+
+  CompleteFetch();
+
+  EXPECT_FALSE(callback_called_);
+
+  // Ensuring a retry happened and succeeded.
+  SetResponseStatusAndString(net::HTTP_OK, "token=2501");
+  CompleteFetch();
+
+  EXPECT_TRUE(callback_called_);
+  EXPECT_EQ(RegistrationRequest::SUCCESS, status_);
+  EXPECT_EQ("2501", registration_id_);
+}
+
+TEST_F(RegistrationRequestTest, ResponseHttpNotOk) {
+  CreateRequest("sender1,sender2");
+  request_->Start();
+
+  SetResponseStatusAndString(net::HTTP_GATEWAY_TIMEOUT, "token=2501");
+  CompleteFetch();
+
+  EXPECT_FALSE(callback_called_);
+
+  // Ensuring a retry happened and succeeded.
+  SetResponseStatusAndString(net::HTTP_OK, "token=2501");
+  CompleteFetch();
+
+  EXPECT_TRUE(callback_called_);
+  EXPECT_EQ(RegistrationRequest::SUCCESS, status_);
+  EXPECT_EQ("2501", registration_id_);
+}
+
 }  // namespace gcm