Differentiate primary account compares on GAIA cookie presence.

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 78519acc839dc21a7aa5346248bde389e7d43380..6131f67c6b5515d9506ee870233f0df6cf063415 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -25660,11 +25660,12 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
-<histogram name="Signin.Reconciler.DifferentPrimaryAccounts">
+<histogram name="Signin.Reconciler.DifferentPrimaryAccounts"
+    enum="DifferentPrimaryAccounts">
   <owner>mlerman@chromium.org</owner>
   <summary>
-    After the first execution of the account reconciler, true if the token
-    service and cookie jar contained different primary accounts.
+    After execution of the account reconcilor, compares the primary account in
+    the token service to the primary GAIA account of the cookie jar.
   </summary>
 </histogram>
 
@@ -34522,6 +34523,13 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="20" label="SQLite Integrity Web Data Test"/>
 </enum>
 
+<enum name="DifferentPrimaryAccounts" type="int">
+  <int value="0" label="Primary Accounts the same"/>
+  <int value="1" label="(obsolete) Primary Accounts different"/>
+  <int value="2" label="No GAIA account in cookie jar"/>
+  <int value="3" label="Primary accounts present but different"/>
+</enum>
+
 <enum name="DllHash" type="int">
 <!-- Generated by chrome_elf/dll_hash_for_uma/dll_hash_for_uma_main.cc -->