ChromeOS: Implement CaptivePortalAuthenticationIgnoresProxy policy.

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 225c79d5e87806224691c9907f6bd67ba636ff34..cb0ad86406fe2a8bffa92db525b15b4a05b7db94 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -47451,6 +47451,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="293"
       label="Send monitoring heartbeats to the management server."/>
   <int value="294" label="How often the monitoring heartbeats are sent."/>
+  <int value="295" label="Captive portal authentication ignores proxy"/>
 </enum>
 
 <enum name="EnterprisePolicyInvalidations" type="int">
@@ -52390,6 +52391,7 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="-1514611301" label="enable-data-reduction-proxy-bypass-warnings"/>
   <int value="-1510839574" label="disable-sync-synced-notifications"/>
   <int value="-1497338981" label="disable-accelerated-overflow-scroll"/>
+  <int value="-1490298774" label="enable-captive-portal-bypass-proxy-option"/>
   <int value="-1482685863" label="enable-request-tablet-site"/>
   <int value="-1460462432" label="disable-media-source"/>
   <int value="-1433087548" label="enable-app-install-alerts"/>