[Remote suggestions] Move the throttler into the Scheduler

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 eccabfb3262ad0516e704d1e72a69ba1b16ddc07..cb5ac092bb2fbb0550ce95b55d7185ef3cb3ea17 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -101889,14 +101889,14 @@ value.
 
 <enum name="NtpSnippetsFetchResult" type="int">
   <int value="0" label="Success"/>
-  <int value="1" label="Empty hosts"/>
+  <int value="1" label="Empty hosts - deprecated"/>
   <int value="2" label="URLRequestStatus error"/>
   <int value="3" label="HTTP error"/>
   <int value="4" label="JSON parse error"/>
   <int value="5" label="Invalid snippet content"/>
   <int value="6" label="Error in obtaining oauth access token"/>
-  <int value="7" label="Out of interactive quota"/>
-  <int value="8" label="Out of non-interactive quota"/>
+  <int value="7" label="Out of interactive quota - deprecated"/>
+  <int value="8" label="Out of non-interactive quota - deprecated"/>
 </enum>
 
 <enum name="NTPSnippetsState" type="int">