cros: Added a new function to quick unlock api for checking unfinished pins.

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 752b6131947870e3170b0851340c0b75c0858cfb..c4fccd7ccf0d464b6bfe983fbf4016efdfdebdc7 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -77959,6 +77959,10 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
              assistance sessions"/>
   <int value="345" label="Enables HTTP/0.9 support on non-default ports"/>
   <int value="346" label="Enables force sign in for browser."/>
+  <int value="347"
+      label="Set a minimum pin length for the lock screen pin unlock."/>
+  <int value="348"
+      label="Set a maximum pin length for the lock screen pin unlock."/>
 </enum>
 
 <enum name="EnterprisePolicyInvalidations" type="int">
@@ -79940,6 +79944,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="1146" label="LANGUAGESETTINGSPRIVATE_DISABLELANGUAGE"/>
   <int value="1147" label="FILEMANAGERPRIVATEINTERNAL_GETDIRECTORYSIZE"/>
   <int value="1148" label="BLUETOOTHLOWENERGY_SETADVERTISINGINTERVAL"/>
+  <int value="1149" label="QUICKUNLOCKPRIVATE_GETUSABLEPIN"/>
 </enum>
 
 <enum name="ExtensionIconState" type="int">