Fix the enum names for DataReductionProxyBypassType

Fix the enum names for DataReductionProxyBypassType
in enums.xml to match with the actual code in
data_reduction_proxy_bypass_type_list.h.

Change-Id: I2effeccb3babc1d30995ccf76c35bcd9f7481b4e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1539188Reviewed-by: rajendrant <rajendrant@chromium.org>
Commit-Queue: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#644408}

tools/metrics/histograms/enums.xml

@@ -11065,9 +11065,10 @@ Called by update_net_error_codes.py.-->
   <int value="6"
       label="Bypass due to 407 response from proxy without a challenge"/>
   <int value="7" label="Bypass due to a 500 internal server error"/>
-  <int value="8" label="Bypass because the request URI was too long"/>
+  <int value="8" label="Bypass due to a 502 response"/>
   <int value="9" label="Bypass due to a 503 response"/>
   <int value="10" label="Bypass due to any network error"/>
+  <int value="11" label="Bypass due to a URL redirect cycle"/>
 </enum>
 
 <enum name="DataReductionProxyConfigServiceAuthExpiredSessionKey">