[subresource_filter] Add ContentSettings.{Exceptions,Default} metrics

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 4771494ed098ff79098869cd46ec16b98d67350d..14d39b805a152b9b310da2cfffe91a37dc0976d9 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -8584,6 +8584,12 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="ContentSettings.DefaultSubresourceFilterSetting"
+    enum="ContentSetting">
+  <owner>csharrison@chromium.org</owner>
+  <summary>The default subresource filter setting at profile open</summary>
+</histogram>
+
 <histogram name="ContentSettings.DefaultWebBluetoothGuardSetting"
     enum="ContentSetting">
   <owner>jyasskin@chromium.org</owner>
@@ -84525,6 +84531,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <suffix name="site-engagement" label="Site engagement exceptions"/>
   <suffix name="ssl-cert-decisions" label="SSL cert decisions exceptions"/>
   <suffix name="usb-chooser-data" label="USB chooser data exceptions"/>
+  <suffix name="subresource-filter" label="Subresource filter exceptions"/>

[Bernhard Bauer, 2017/05/12 09:41:54]

Nit: Keep these alphabetic, please.

[Charlie Harrison, 2017/05/12 12:36:47]

Done.

   <affected-histogram name="ContentSettings.Exceptions"/>
 </histogram_suffixes>