Implement the auto-logout on idle feature for Kiosk mode.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index fcfeeb0720ca9dbfa4e1e8ff4f5e3307cb405e09..dbff3fcd3fcdf9c6aef62d99cdcc6c7c04b963bc 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -11724,6 +11724,21 @@ Some features may be unavailable.  Please check that the profile exists and you
       <ph name="DATE">$1<ex>Aug 16, 2010</ex></ph>
     </message>
 
+    <!-- Idle Logout Dialog Strings -->
+    <if expr="pp_ifdef('chromeos')">
+      <message name="IDS_IDLE_LOGOUT_TITLE" desc="Dialog title for the idle logout dialog">
+        Are you still there?
+      </message>
+      <message name="IDS_IDLE_LOGOUT_WARNING" desc="Warning for the idle logout dialog">
+        This Chromebook is now idle and will be restarted.
+        Press any key or move the pointer to continue exploring.
+        <ph name="LINE_BREAK">&lt;br&gt;&lt;br&gt;</ph>
+        <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>
+        Restarting in: <ph name="END_BOLD">&lt;/strong&gt;</ph>
+        <ph name="TIME_LEFT">$1<ex>20</ex></ph> seconds.
+      </message>
+    </if>
+
     <!-- Imageburn Strings -->
     <if expr="pp_ifdef('chromeos')">
       <message name="IDS_CHECKING_FOR_UPDATES" desc="Notification for checking for update">