cros: Tweaked the good/bad pin checking on the js to use the new quick unlock api function.

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- About Page -->
   <message name="IDS_SETTINGS_ABOUT_PAGE_BROWSER_VERSION" desc="The text label describing the version of the browser, example: Version 57.0.2937.0 (Developer Build) unknown (64-bit)">
     Version <ph name="PRODUCT_VERSION">$1<ex>15.0.865.0</ex></ph> (<ph name="PRODUCT_CHANNEL">$2<ex>Developer Build</ex></ph>) <ph name="PRODUCT_MODIFIER">$3</ph> <ph name="PRODUCT_VERSION_BITS">$4</ph>
   </message>
   <if expr="chromeos">
     <message name="IDS_SETTINGS_ABOUT_PAGE_DETAILED_BUILD_INFO" desc="Label describing the section that shows detailed information about the current Chrome build.">
       Detailed build information
@@ skipping 2096 matching lines @@
   <if expr="chromeos">
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_CHOOSE_PIN_TITLE" desc="Message shown below the title that tells the user to enter the initial PIN.">
       Enter your PIN
     </message>
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_CONFIRM_PIN_TITLE" desc="Message shown below the title that tells the user to confirm their initial PIN entry.">
       Confirm your PIN
     </message>
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_WEAK_PIN" desc="Message shown below the title that warns the user they have entered a PIN that is easy to guess.">
       PIN may be easy to guess
     </message>
-    <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_TOO_SHORT" desc="Message shown below the title that tells the user that the PIN they entered needs to be at least four digits long.">
-      PIN must be at least 4 digits
+    <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_TOO_SHORT" desc="Message shown below the title that tells the user that the PIN they entered needs to be at least minimum digits long.">
+      PIN must be at least <ph name="MINIMUM">$1<ex>4</ex></ph> digits
+    </message>
+    <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_TOO_LONG" desc="Message shown below the title that tells the user that the PIN they entered needs to be less than maximum digits long.">
+      PIN must be less than <ph name="MAXIMUM">$1<ex>0</ex></ph> digits
     </message>
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_MISMATCHED" desc="Message shown below the title that tells the user they have entered two different PIN values.">
       PINs do not match
     </message>
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_CONTINUE_BUTTON" desc="A button that accepts the users initial PIN. The user will have to enter the PIN again after hitting this button to confirm that they entered it correctly.">
       Continue
     </message>
     <message name="IDS_SETTINGS_PEOPLE_ENABLE_SCREENLOCK" desc="The text on the checkbox to enable screenlocker for current user.">
       Show lock screen when waking from sleep
     </message>
@@ skipping 611 matching lines @@
       System
     </message>
     <message name="IDS_SETTINGS_SYSTEM_HARDWARE_ACCELERATION_LABEL" desc="Label for the checkbox that forces Chrome to render via hardware acceleration (GPU) when available.">
       Use hardware acceleration when available
     </message>
     <message name="IDS_SETTINGS_SYSTEM_PROXY_SETTINGS_BUTTON" desc="Text for the button that changes a user's network proxy settings.">
       Change proxy settings
     </message>
   </if>
 </grit-part>