Add enterprise policy to turn off Bluetooth.

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 d1f6c589c98f2ed52d062650af328089eaa1f7c7..42bb8cd28485d6e068c19173fbbdcf8075cd9c1c 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -5574,6 +5574,14 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="ContentSettings.DefaultWebBluetoothGuardSetting"
+    enum="ContentSetting">
+  <owner>jyasskin@chromium.org</owner>
+  <summary>
+    The default permission setting for Web Bluetooth at profile open.
+  </summary>
+</histogram>
+
 <histogram name="ContentSettings.LastSettingParsed" enum="LastSettingParsed">
   <obsolete>
     Deprecated 2015-10-05 in Issue 433475. Histogram was used temorarily for
@@ -63043,6 +63051,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="319"
       label="Allow the auto launched with zero delay kiosk app to control
              ChromeOS version"/>
+  <int value="320" label="Default web bluetooth guard setting"/>
 </enum>
 
 <enum name="EnterprisePolicyInvalidations" type="int">
@@ -82140,6 +82149,9 @@ To add a new entry, add it with any value and run test to compute valid value.
       label="Chooser insta-closed because Chrome isn't allowed to ask for
              permission to scan for BT devices"/>
   <int value="11" label="Blacklisted service UUID in filter"/>
+  <int value="12"
+      label="Chooser insta-closed because user or enterprise policy has
+             disabled it"/>
 </enum>
 
 <enum name="WebCertVerifyAgreement" type="int">
@@ -86472,6 +86484,7 @@ To add a new entry, add it with any value and run test to compute valid value.
   <suffix name="DurableStorage" label="Durable Storage permission actions"/>
   <suffix name="AudioCapture" label="Microphone permission actions"/>
   <suffix name="VideoCapture" label="Camera permission actions"/>
+  <suffix name="BluetoothGuard" label="Bluetooth permission actions"/>
   <affected-histogram name="Permissions.Action"/>
   <affected-histogram name="Permissions.Action.InsecureOrigin"/>
   <affected-histogram name="Permissions.Action.SecureOrigin"/>