Remove webkitAudoContext and webkitOfflineAudioContext

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 385390bae19b669cdb6d1a14ba1d3a1fbf9d35c3..1d40f6dbf43baf46baa79b6ec9661c9d979e4fc0 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -86699,10 +86699,10 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="649" label="AudioContextDecodeAudioData"/>
   <int value="650" label="AudioContextResume"/>
   <int value="651" label="AudioContextSuspend"/>
-  <int value="652" label="AudioContext"/>
-  <int value="653" label="OfflineAudioContext"/>
-  <int value="654" label="PrefixedAudioContext"/>
-  <int value="655" label="PrefixedOfflineAudioContext"/>
+  <int value="652" label="OBSOLETE_AudioContext"/>
+  <int value="653" label="OBSOLETE_OfflineAudioContext"/>
+  <int value="654" label="OBSOLETE_PrefixedAudioContext"/>
+  <int value="655" label="OBSOLETE_PrefixedOfflineAudioContext"/>
   <int value="656" label="AddEventListenerNoArguments"/>
   <int value="657" label="AddEventListenerOneArgument"/>
   <int value="658" label="RemoveEventListenerNoArguments"/>
@@ -87782,6 +87782,8 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="1696" label="FullscreenAllowedByOrientationChange"/>
   <int value="1697"
       label="ServiceWorkerRespondToNavigationRequestWithRedirectedResponse"/>
+  <int value="1698" label="V8AudioContext_Constructor"/>
+  <int value="1699" label="V8OfflineAudioContext_Constructor"/>
 </enum>
 
 <enum name="FetchRequestMode" type="int">