rAc: Wallet: UMA for wallet response codes.

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 cb4ef31c1ca3ff7aa3ef65a36e6c9f36dddd502b..15d06fe509f681fb2f68a1821a2e42025ac98583 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -17422,6 +17422,10 @@ other types of suffix sets.
   </summary>
 </histogram>
 
+<histogram name="Wallet.ResponseCode" enum="HttpResponseCode">
+  <summary>HTTP response codes seen by Wallet client.</summary>
+</histogram>
+
 <histogram name="WebCore.Animation.CSSProperties" enum="MappedCSSProperties">
   <summary>
     Counts the number of times each CSS property is animated. There is no limit
@@ -21158,6 +21162,49 @@ other types of suffix sets.
   <int value="9" label="Corrupt stats response"/>
 </enum>
 
+<enum name="HttpResponseCode" type="int">
+  <int value="100" label="Continue"/>
+  <int value="101" label="Switching Protocols"/>
+  <int value="200" label="OK"/>
+  <int value="201" label="Created"/>
+  <int value="202" label="Accepted"/>
+  <int value="203" label="Non-Authoritative Information"/>
+  <int value="204" label="No Content"/>
+  <int value="205" label="Reset Content"/>
+  <int value="206" label="Partial Content"/>
+  <int value="300" label="Multiple Choices"/>
+  <int value="301" label="Moved Permanently"/>
+  <int value="302" label="Found"/>
+  <int value="303" label="See Other"/>
+  <int value="304" label="Not Modified"/>
+  <int value="305" label="Use Proxy"/>
+  <int value="306" label="(Unused)"/>
+  <int value="307" label="Temporary Redirect"/>
+  <int value="400" label="Bad Request"/>
+  <int value="401" label="Unauthorized"/>
+  <int value="402" label="Payment Required"/>
+  <int value="403" label="Forbidden"/>
+  <int value="404" label="Not Found"/>
+  <int value="405" label="Method Not Allowed"/>
+  <int value="406" label="Not Acceptable"/>
+  <int value="407" label="Proxy Authentication Required"/>
+  <int value="408" label="Request Timeout"/>
+  <int value="409" label="Conflict"/>
+  <int value="410" label="Gone"/>
+  <int value="411" label="Length Required"/>
+  <int value="412" label="Precondition Failed"/>
+  <int value="413" label="Request Entity Too Large"/>
+  <int value="414" label="Request-URI Too Long"/>
+  <int value="415" label="Unsupported Media Type"/>
+  <int value="416" label="Requested Range Not Satisfiable"/>
+  <int value="417" label="Expectation Failed"/>
+  <int value="500" label="Internal Server Error"/>
+  <int value="501" label="Not Implemented"/>
+  <int value="503" label="Service Unavailable"/>
+  <int value="504" label="Gateway Timeout"/>
+  <int value="505" label="HTTP Version Not Supported"/>
+</enum>
+
 <enum name="HttpSocketType" type="int">
   <int value="0" label="UNUSED">newly connected socket</int>
   <int value="1" label="UNUSED_IDLE">