Add checkbox for reporting invalid TLS/SSL cert chains

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index cd0a3aab7c4138d64ce9a531d8a52aa854ff4ed5..76473f61113088a2e79d006bfe9f3a36981c107d 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2268,6 +2268,13 @@ const Experiment kExperiments[] = {
     SINGLE_VALUE_TYPE(chromeos::switches::kEnableFirewallHolePunching)
   },
 #endif  // defined(OS_CHROMEOS)
+  {
+    "enable-cert-collection",
+    IDS_ENABLE_INVALID_CERT_COLLECTION,
+    IDS_ENABLE_INVALID_CERT_COLLECTION_DESCRIPTION,
+    kOsAll,
+    SINGLE_VALUE_TYPE(switches::kEnableInvalidCertCollection)
+  },
 
   // NOTE: Adding new command-line switches requires adding corresponding
   // entries to enum "LoginCustomFlags" in histograms.xml. See note in