Record metric of geo permission before and after showing the disclosure.

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 3c5a1e7a27f2d541a1ffe549b60139e8178fa8c3..f35a3f5811913f1dbab6bedc9e756d0b056abc45 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -19001,6 +19001,26 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="GeolocationDisclosure.PostDisclosurePermission"
+    enum="PermissionStatus">
+  <owner>benwells@chromium.org</owner>
+  <summary>
+    Records the geolocation permission for the default search engine's origin
+    after the search geolocation disclosure has been shown and won't be shown
+    again. This metric is only recorded once per client.
+  </summary>
+</histogram>
+
+<histogram name="GeolocationDisclosure.PreDisclosurePermission"
+    enum="PermissionStatus">
+  <owner>benwells@chromium.org</owner>
+  <summary>
+    Records the geolocation permission for the default search engine's origin
+    immediately before the search geolocation disclosure has been shown. This
+    metric is only recorded once per client.
+  </summary>
+</histogram>
+
 <histogram name="GoogleNow.Card.Button.Clicked0" enum="GoogleNowCardTypeId">
   <owner>robliao@chromium.org</owner>
   <owner>skare@chromium.org</owner>