Remove the EV Certs 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 d09861039e964d030a1eafd59863a6318e26a23c..a51cc0cea6c7072097314759f1f79a1a3a51c890 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -40262,6 +40262,10 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="Net.SSL_EVCertificateInWhitelist" enum="Boolean">
+  <obsolete>
+    Removed 06/2017 with the deprecation of the EV certificate whitelist after
+    all certificates expired.
+  </obsolete>
   <owner>eranm@chromium.org</owner>
   <owner>rsleevi@chromium.org</owner>
   <summary>
@@ -40272,6 +40276,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="Net.SSL_EVCTCompliance" enum="EVCTCompliance">
+  <obsolete>
+    Removed 06/2017 with the deprecation of distinct EV and !EV CT policies.
+  </obsolete>
   <owner>eranm@chromium.org</owner>
   <owner>rsleevi@chromium.org</owner>
   <summary>
@@ -40287,6 +40294,10 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 
 <histogram name="Net.SSL_EVWhitelistValidityForNonCompliantCert"
     enum="EVWhitelistStatus">
+  <obsolete>
+    Removed 06/2017 with the deprecation of the EV certificate whitelist after
+    all certificates expired.
+  </obsolete>
   <owner>eranm@chromium.org</owner>
   <owner>rsleevi@chromium.org</owner>
   <summary>