Move Bluetooth.Web.FunctionCall.Count UMA from browser to WebKit

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 ac03be6623f9f5bbde717b11dbc504c99ec11a0b..7c579c7690cc7927a9e2e1decf151d931bee63ed 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -5670,6 +5670,10 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="Bluetooth.Web.FunctionCall.Count" enum="WebBluetoothFunction">
+  <obsolete>
+    Deprecated as of 3/2017. Replaced by using blink IDL annotation MeasureAs
+    which appear in Blink.UseCounter.Features.
+  </obsolete>
   <owner>jyasskin@chromium.org</owner>
   <owner>ortuno@chromium.org</owner>
   <owner>scheib@chromium.org</owner>
@@ -94415,6 +94419,20 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="1879" label="V0CustomElementsConstruct"/>
   <int value="1880" label="V8IDBObserver_Observe_Method"/>
   <int value="1881" label="V8IDBObserver_Unobserve_Method"/>
+  <int value="1882" label="WebBluetoothRemoteCharacteristicGetDescriptor"/>
+  <int value="1883" label="WebBluetoothRemoteCharacteristicGetDescriptors"/>
+  <int value="1884" label="WebBluetoothRemoteCharacteristicReadValue"/>
+  <int value="1885" label="WebBluetoothRemoteCharacteristicWriteValue"/>
+  <int value="1886" label="WebBluetoothRemoteCharacteristicStartNotifications"/>
+  <int value="1887" label="WebBluetoothRemoteCharacteristicStopNotifications"/>
+  <int value="1888" label="WebBluetoothRemoteDescriptorReadValue"/>
+  <int value="1889" label="WebBluetoothRemoteDescriptorWriteValue"/>
+  <int value="1890" label="WebBluetoothRemoteServerConnect"/>
+  <int value="1891" label="WebBluetoothRemoteServerDisconnect"/>
+  <int value="1892" label="WebBluetoothRemoteServerGetPrimaryService"/>
+  <int value="1893" label="WebBluetoothRemoteServerGetPrimaryServices"/>
+  <int value="1894" label="WebBluetoothRemoteServiceGetCharacteristic"/>
+  <int value="1895" label="WebBluetoothRemoteServiceGetCharacteristics"/>
 </enum>
 
 <enum name="FetchRequestMode" type="int">