Fix up certificate error reporting histograms

chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc

Index: chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc
diff --git a/chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc b/chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc
index bf7027f7bc166382c5f6ec4ffb60ec590291100c..c92c662a1ca1c81b20e3ff0a8f7e08788041225e 100644
--- a/chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc
+++ b/chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc
@@ -28,7 +28,7 @@
 namespace {
 
 const char kSendHistogramName[] = "SSL.ExpectCTReportSendingAttempt";
-const char kFailureHistogramName[] = "SSL.ExpectCTReportFailure";
+const char kFailureHistogramName[] = "SSL.ExpectCTReportFailure2";
 
 // A test ReportSender that exposes the latest report URI and
 // serialized report to be sent.
@@ -399,7 +399,7 @@ TEST_F(ChromeExpectCTReporterWaitTest, SendReportFailure) {
 
   histograms.ExpectTotalCount(kFailureHistogramName, 1);
   histograms.ExpectBucketCount(kFailureHistogramName,
-                               net::ERR_CONNECTION_FAILED, 1);
+                               -net::ERR_CONNECTION_FAILED, 1);
   histograms.ExpectTotalCount(kSendHistogramName, 1);
   histograms.ExpectBucketCount(kSendHistogramName, true, 1);
 }