Abandon user sign in when policy is retrieved before session started

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 52f9a6bfe21b4cb28d55fca4f5483e2b27f2ead8..76351e8a060e9fb9fe16818d1d59805dd17cb4f4 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -15229,6 +15229,34 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Enterprise.RetrievePolicyResponse.Device"
+    enum="EnterpriseRetrievePolicyResponseType">
+  <owner>emaxx@chromium.org</owner>
+  <owner>igorcov@chromium.org</owner>
+  <summary>
+    On Chrome OS, the response obtained to retrieve device policy request.
+  </summary>
+</histogram>
+
+<histogram name="Enterprise.RetrievePolicyResponse.DeviceLocalAccount"
+    enum="EnterpriseRetrievePolicyResponseType">
+  <owner>emaxx@chromium.org</owner>
+  <owner>igorcov@chromium.org</owner>
+  <summary>
+    On Chrome OS, the response obtained to retrieve device local account policy
+    request.
+  </summary>
+</histogram>
+
+<histogram name="Enterprise.RetrievePolicyResponse.User"
+    enum="EnterpriseRetrievePolicyResponseType">
+  <owner>emaxx@chromium.org</owner>
+  <owner>igorcov@chromium.org</owner>
+  <summary>
+    On Chrome OS, the response obtained to retrieve user policy request.
+  </summary>
+</histogram>
+
 <histogram name="Enterprise.SystemLogPIILeak" enum="SystemLogPIIType">
   <obsolete>
     Deprecated and removed from code as of 01/2016.
@@ -91212,6 +91240,18 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="18" label="Store Failed">Caching a policy to disk failed.</int>
 </enum>
 
+<enum name="EnterpriseRetrievePolicyResponseType" type="int">
+  <summary>
+    Status codes produced by SessionManagerClient for policy retrieval requests.
+    Corresponds to RetrievePolicyResponseType in
+    chromeos/dbus/session_manager_client.h.
+  </summary>
+  <int value="0" label="Other type of error on retrieve policy request"/>
+  <int value="1" label="Success"/>
+  <int value="2" label="Retrieve request issued before session started"/>
+  <int value="3" label="Failed to retrieve policy data in session manager"/>
+</enum>
+
 <enum name="EnterpriseUploadJobSuccess" type="int">
   <summary>
     Number of UploadJob retries as defined in