Deprecate Safe Browsing timing histograms

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 e298f0aa7a6ca089a36329a6f6094b92b6cf6e86..e41d4650c0cde58163373a31ad7d33f2fa7c8168 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -27388,6 +27388,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="SB2.MalwareInterstitialTimeClosed" units="milliseconds">
+  <obsolete>
+    Deprecated 9/2014.
+  </obsolete>
   <owner>felt@chromium.org</owner>
   <summary>
     The time between when we show the SafeBrowsing malware interstitial and the
@@ -27397,6 +27400,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="SB2.MalwareInterstitialTimeDiagnostic" units="milliseconds">
+  <obsolete>
+    Deprecated 9/2014.
+  </obsolete>
   <owner>felt@chromium.org</owner>
   <summary>
     The time between when we show the SafeBrowsing malware interstitial and the
@@ -27406,6 +27412,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 
 <histogram name="SB2.MalwareInterstitialTimeExpandedSeeMore"
     units="milliseconds">
+  <obsolete>
+    Deprecated 9/2014.
+  </obsolete>
   <owner>felt@chromium.org</owner>
   <summary>
     The time between when we show the SafeBrowsing malware interstitial and the
@@ -27415,6 +27424,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="SB2.MalwareInterstitialTimeLearnMore" units="milliseconds">
+  <obsolete>
+    Deprecated 9/2014.
+  </obsolete>
   <owner>felt@chromium.org</owner>
   <summary>
     The time between when we show the SafeBrowsing malware interstitial and the
@@ -27423,6 +27435,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="SB2.MalwareInterstitialTimePrivacyPolicy" units="milliseconds">
+  <obsolete>
+    Deprecated 9/2014.
+  </obsolete>
   <owner>felt@chromium.org</owner>
   <summary>
     The time between when we show the SafeBrowsing malware interstitial and the
@@ -27431,6 +27446,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="SB2.MalwareInterstitialTimeProceed" units="milliseconds">
+  <obsolete>
+    Deprecated 9/2014.
+  </obsolete>
   <owner>felt@chromium.org</owner>
   <summary>
     The time between when we show the SafeBrowsing malware interstitial and the
@@ -27439,6 +27457,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="SB2.MalwareInterstitialTimeTakeMeBack" units="milliseconds">
+  <obsolete>
+    Deprecated 9/2014.
+  </obsolete>
   <owner>felt@chromium.org</owner>
   <summary>
     The time between when we show the SafeBrowsing malware interstitial and the