Certificate Transparency: Code for unpacking EV cert hashes whitelist

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index a70f1e946bb3be82e7e72a786a9d4f361feb232c..152d2564109a6bfed66235c14ee5a8dde21f3900 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -13668,7 +13668,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.CertificateTransparency.MainFrameValidSCTCount">
-  <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
+  <owner>eranm@chromium.org</owner>
   <summary>
     Number of valid Signed Certificate Timestamps (SCTs) present for the
     main-frame resource. Emitted every time a main-frame resource is fetched.
@@ -13676,7 +13676,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.CertificateTransparency.SCTOrigin" enum="SCTOrigin">
-  <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
+  <owner>eranm@chromium.org</owner>
   <summary>
     The origin breakdown of Signed Certificate Timestamps (SCTs). Emitted once
     for every SCT when first validated, which means 0 or more times during every
@@ -13685,7 +13685,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.CertificateTransparency.SCTsPerConnection">
-  <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
+  <owner>eranm@chromium.org</owner>
   <summary>
     The number of Signed Certificate Timestamps (SCTs) that were available for
     each SSL connection, including SCTs embedded in the certificate. This metric
@@ -13695,7 +13695,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.CertificateTransparency.SCTStatus" enum="SCTVerifyStatus">
-  <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
+  <owner>eranm@chromium.org</owner>
   <summary>
     Breakdown of Signed Certificate Timestamps (SCTs) validation status. Emitted
     once for every SCT when first validated, which means 0 or more times during
@@ -16780,6 +16780,15 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="Net.SSL_EVCertificateInWhitelist" enum="Boolean">
+  <owner>eranm@chromium.org</owner>
+  <owner>rsleevi@chromium.org</owner>
+  <summary>
+    Whether an EV certificate is present in the Certificate Transparency
+    whitelist
+  </summary>
+</histogram>
+
 <histogram name="Net.SSLCertBlacklisted">
   <owner>agl@chromium.org</owner>
   <summary>