Implement restart on Idle 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 e72e61b7741a55a0e7471ec7c02d59c79bc0ab1b..cd24d819c16a9f16a256b9a57d3ba747e2a7ccc5 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -5059,6 +5059,14 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_ENABLE_RESTORE_SESSION_STATE_DESCRIPTION" desc="Description for the flag to enable restoring (more) session state after restarts and crashes.">
 	Restore more session state (e.g., session cookies) after restarts and crashes.
       </message>
+      <if expr="pp_ifdef('chromeos')">
+        <message name="IDS_FLAGS_ENABLE_RETAIL_MODE_NAME" desc="Title for the flag to enable retail mode.">
+          Enable Kiosk mode
+        </message>
+        <message name="IDS_FLAGS_ENABLE_RETAIL_MODE_DESCRIPTION" desc="Description for the flag to enable retail mode">
+          Enable a specific mode for retail scenarios where the machine behaves appropriately for a retail kiosk.
+        </message>
+      </if>
       <message name="IDS_FLAGS_DISABLE_SOFTWARE_RASTERIZER_NAME" desc="Title for the flag to disable using a software rasterizer.">
 	Disable 3D software rasterizer
       </message>
@@ -5819,6 +5827,21 @@ The following plug-in is unresponsive: <ph name="PLUGIN_NAME">$1
         Skip Import
       </message>
 
+      <!-- Kiosk mode logout dialog -->
+      <if expr="pp_ifdef('chromeos')">
+        <message name="IDS_RETAIL_MODE_LOGOUT_TITLE" desc="Dialog title for the retail mode logout dialog">
+          Are you still there?
+        </message>
+        <message name="IDS_RETAIL_MODE_LOGOUT_WARNING" desc="Warning for the retail mode 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>
+
       <!-- Report Bug or Broken Website Dialog -->
       <message name="IDS_FEEDBACK_TITLE" desc="Dialog title for bug report dialog">
         Whoops. Let's fix that.