Add HTTP certificate report URL with Finch gate

chrome/browser/net/certificate_error_reporter.cc

Index: chrome/browser/net/certificate_error_reporter.cc
diff --git a/chrome/browser/net/certificate_error_reporter.cc b/chrome/browser/net/certificate_error_reporter.cc
index c1f15914001244b9ebfb3fb563ea800e3d11f863..6d0c66c387aac5d27dfc5c5db60577edf6ea6029 100644
--- a/chrome/browser/net/certificate_error_reporter.cc
+++ b/chrome/browser/net/certificate_error_reporter.cc
@@ -7,6 +7,7 @@
 #include <set>
 
 #include "base/logging.h"
+#include "base/metrics/field_trial.h"
 #include "chrome/browser/net/encrypted_cert_logger.pb.h"
 
 #if defined(USE_OPENSSL)
@@ -84,6 +85,12 @@ bool EncryptSerializedReport(
 
 namespace chrome_browser_net {
 
+// Constants for the Finch trial that controls whether the
+// CertificateErrorReporter supports HTTP uploads.
+const char kHttpCertificateUploadExperiment[] =
+    "ReportCertificateErrorsOverHttp";
+const char kHttpCertificateUploadGroup[] = "UploadReportsOverHttp";
+
 CertificateErrorReporter::CertificateErrorReporter(
     net::URLRequestContext* request_context,
     const GURL& upload_url,
@@ -174,7 +181,8 @@ scoped_ptr<net::URLRequest> CertificateErrorReporter::CreateURLRequest(
 
 bool CertificateErrorReporter::IsHttpUploadUrlSupported() {
 #if defined(USE_OPENSSL)
-  return true;
+  return base::FieldTrialList::FindFullName(kHttpCertificateUploadExperiment) ==
+         kHttpCertificateUploadGroup;
 #else
   return false;
 #endif