Separate phishing/SE ads/ SE landing interstitial UMA stats

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 1f202182661bca6d5444927f5789ec4cfa8a9ea5..020cbb5cb7e78396e7bf4aa9e9308fc5434dcace 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -18799,7 +18799,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <owner>felt@chromium.org</owner>
   <summary>
     User decision when presented with a security interstitial. As of M44,
-    subresource interstitials were split into their own entries.
+    subresource interstitials were split into their own entries. As of M52,
+    social_engineering_ads* and social_engineering_landing* interstitial reasons
+    are split into their own entries from phishing*.
   </summary>
 </histogram>
 
@@ -18809,7 +18811,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <summary>
     User decision when presented with a security interstitial, on a site that
     the user had previously visited.  As of M44, subresource interstitials were
-    split into their own entries.
+    split into their own entries. As of M52, social_engineering_ads* and
+    social_engineering_landing* interstitial reasons are split into their own
+    entries from phishing*.
   </summary>
 </histogram>
 
@@ -18818,7 +18822,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <owner>felt@chromium.org</owner>
   <summary>
     User interactions with a security interstitial.  As of M44, subresource
-    interstitials were split into their own entries.
+    interstitials were split into their own entries. As of M52,
+    social_engineering_ads* and social_engineering_landing* interstitial reasons
+    are split into their own entries from phishing*.
   </summary>
 </histogram>
 
@@ -94775,6 +94781,10 @@ To add a new entry, add it with any value and run test to compute valid value.
   <suffix name="malware_subresource"/>
   <suffix name="phishing"/>
   <suffix name="phishing_subresource"/>
+  <suffix name="social_engineering_ads"/>
+  <suffix name="social_engineering_ads_subresource"/>
+  <suffix name="social_engineering_landing"/>
+  <suffix name="social_engineering_landing_subresource"/>
   <affected-histogram name="interstitial.decision"/>
   <affected-histogram name="interstitial.decision.repeat_visit"/>
   <affected-histogram name="interstitial.interaction"/>
@@ -94816,6 +94826,27 @@ To add a new entry, add it with any value and run test to compute valid value.
   <affected-histogram
       name="interstitial.phishing_subresource.decision.repeat_visit"/>
   <affected-histogram name="interstitial.phishing_subresource.interaction"/>
+  <affected-histogram name="interstitial.social_engineering_ads.decision"/>
+  <affected-histogram
+      name="interstitial.social_engineering_ads.decision.repeat_visit"/>
+  <affected-histogram name="interstitial.social_engineering_ads.interaction"/>
+  <affected-histogram
+      name="interstitial.social_engineering_ads_subresource.decision"/>
+  <affected-histogram
+      name="interstitial.social_engineering_ads_subresource.decision.repeat_visit"/>
+  <affected-histogram
+      name="interstitial.social_engineering_ads_subresource.interaction"/>
+  <affected-histogram name="interstitial.social_engineering_landing.decision"/>
+  <affected-histogram
+      name="interstitial.social_engineering_landing.decision.repeat_visit"/>
+  <affected-histogram
+      name="interstitial.social_engineering_landing.interaction"/>
+  <affected-histogram
+      name="interstitial.social_engineering_landing_subresource.decision"/>
+  <affected-histogram
+      name="interstitial.social_engineering_landing_subresource.decision.repeat_visit"/>
+  <affected-histogram
+      name="interstitial.social_engineering_landing_subresource.interaction"/>
 </histogram_suffixes>
 
 <histogram_suffixes name="SecurityInterstitialSSLType" separator="."