bluetooth: Add histograms and logging for requestDevice()

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 e16727c2aa6bed7f73d2ba3fc283b9ad22979c3b..c7f51750d2e6a3935f3896c1551c6bc99a93453d 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -2712,18 +2712,6 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
-<histogram name="Bluetooth.RequestDevice.Outcome"
-    enum="BluetoothRequestDeviceOutcome">
-  <owner>jyasskin@chromium.org</owner>
-  <owner>ortuno@chromium.org</owner>
-  <owner>scheib@chromium.org</owner>
-  <summary>
-    Records the result of a navigator.bluetooth.requestDevice() call. Used to
-    understand what errors developers are getting so we can target efforts
-    toward the most common ones.
-  </summary>
-</histogram>
-
 <histogram name="Bookmarks.LaunchDepth">
   <owner>yfriedman@chromium.org</owner>
   <summary>
@@ -48304,6 +48292,65 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <summary>HTTP response codes seen by Wallet client.</summary>
 </histogram>
 
+<histogram name="WebBluetooth.RequestDevice.Filters.Count" units="filters">
+  <owner>jyasskin@chromium.org</owner>
+  <owner>ortuno@chromium.org</owner>
+  <owner>scheib@chromium.org</owner>
+  <summary>
+    Records how many filters are used when scanning. This results will help us
+    better understand the uses of the API and make changes according to
+    developers' behavior.
+  </summary>
+</histogram>
+
+<histogram name="WebBluetooth.RequestDevice.Filters.Services"
+    enum="GATTServices">
+  <owner>jyasskin@chromium.org</owner>
+  <owner>ortuno@chromium.org</owner>
+  <owner>scheib@chromium.org</owner>
+  <summary>
+    Records what GATT Services are used when scanning. This will help us know if
+    we should build an API for specific services rather than a general Bluetooth
+    API.
+  </summary>
+</histogram>
+
+<histogram name="WebBluetooth.RequestDevice.OptionalServices.Count"
+    units="filters">
+  <owner>jyasskin@chromium.org</owner>
+  <owner>ortuno@chromium.org</owner>
+  <owner>scheib@chromium.org</owner>
+  <summary>
+    Records how many optional services are used when scanning. This results will
+    help us better understand the uses of the API and make changes according to
+    developers' behavior.
+  </summary>
+</histogram>
+
+<histogram name="WebBluetooth.RequestDevice.OptionalServices.Services"
+    units="GATTServices">
+  <owner>jyasskin@chromium.org</owner>
+  <owner>ortuno@chromium.org</owner>
+  <owner>scheib@chromium.org</owner>
+  <summary>
+    Records how many optional services are used when scanning. This results will
+    help us better understand the uses of the API and make changes according to
+    developers' behavior.
+  </summary>
+</histogram>
+
+<histogram name="WebBluetooth.RequestDevice.Outcome"
+    enum="WebBluetoothRequestDeviceOutcome">
+  <owner>jyasskin@chromium.org</owner>
+  <owner>ortuno@chromium.org</owner>
+  <owner>scheib@chromium.org</owner>
+  <summary>
+    Records the result of a navigator.bluetooth.requestDevice() call. Used to
+    understand what errors developers are getting so we can target efforts
+    toward the most common ones.
+  </summary>
+</histogram>
+
 <histogram name="WebController.ExternalURLRequestBlocking"
     enum="IOSExternalURLRequestStatus">
   <owner>jyquinn@chromium.org</owner>
@@ -51604,15 +51651,6 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="8" label="Unknown or unhandler error"/>
 </enum>
 
-<enum name="BluetoothRequestDeviceOutcome" type="int">
-  <int value="0" label="Success"/>
-  <int value="1" label="No Bluetooth adapter"/>
-  <int value="2" label="No RenderFrameHost for message source"/>
-  <int value="3" label="Discovery start failed"/>
-  <int value="4" label="Discovery stop failed"/>
-  <int value="5" label="No matching devices found"/>
-</enum>
-
 <enum name="BookmarksExperimentState" type="int">
   <int value="0" label="No experiment"/>
   <int value="1" label="Experiment enabled (sync)"/>
@@ -58794,6 +58832,42 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="8" label="Overflow"/>
 </enum>
 
+<enum name="GATTServices" type="int">
+  <int value="0" label="unknown"/>
+  <int value="1" label="alert_notification"/>
+  <int value="2" label="automation_io"/>
+  <int value="3" label="battery_service"/>
+  <int value="4" label="blood_pressure"/>
+  <int value="5" label="body_composition"/>
+  <int value="6" label="bond_management"/>
+  <int value="7" label="continuous_glucose_monitoring"/>
+  <int value="8" label="current_time"/>
+  <int value="9" label="cycling_power"/>
+  <int value="10" label="cycling_speed_and_cadence"/>
+  <int value="11" label="device_information"/>
+  <int value="12" label="environmental_sensing"/>
+  <int value="13" label="generic_access"/>
+  <int value="14" label="generic_attribute"/>
+  <int value="15" label="glucose"/>
+  <int value="16" label="health_thermometer"/>
+  <int value="17" label="heart_rate"/>
+  <int value="18" label="human_interface_device"/>
+  <int value="19" label="immediate_alert"/>
+  <int value="20" label="indoor_positioning"/>
+  <int value="21" label="internet_protocol_support"/>
+  <int value="22" label="link_loss"/>
+  <int value="23" label="location_and_navigation"/>
+  <int value="24" label="next_dst_change"/>
+  <int value="25" label="phone_alert_status"/>
+  <int value="26" label="pulse_oximeter"/>
+  <int value="27" label="reference_time_update"/>
+  <int value="28" label="running_speed_and_cadence"/>
+  <int value="29" label="scan_parameters"/>
+  <int value="30" label="tx_power"/>
+  <int value="31" label="user_data"/>
+  <int value="32" label="weight_scale"/>
+</enum>
+
 <enum name="GCMCheckinRequestStatus" type="int">
   <int value="0" label="Success"/>
   <int value="1" label="URL fetching failed"/>
@@ -71018,6 +71092,16 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="5" label="Policy"/>
 </enum>
 
+<enum name="WebBluetoothRequestDeviceOutcome" type="int">
+  <int value="0" label="Success"/>
+  <int value="1" label="No Bluetooth adapter"/>
+  <int value="2" label="No RenderFrameHost for message source"/>
+  <int value="3" label="Discovery start failed"/>
+  <int value="4" label="Discovery stop failed"/>
+  <int value="5" label="No matching devices found"/>
+  <int value="6" label="Bluetooth adapter is off."/>
+</enum>
+
 <enum name="WebFontCacheHit" type="int">
   <int value="0" label="Miss"/>
   <int value="1" label="Hit"/>