MD Settings: Add remaining buttons to keyboard subpage

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- Policy Indicators -->
   <message name="IDS_SETTINGS_CONTROLLED_SETTING_EXTENSION" desc="Text displayed in the controlled settings indicator tooltip when a setting's value is enforced by an extension.">
     This setting is controlled by extension <ph name="NAME">$1<ex>Settings Extension</ex></ph>
   </message>
 
   <!-- Accessibility Page -->
   <message name="IDS_SETTINGS_ACCESSIBILITY" desc="Name of the settings page which displays accessibility preferences.">
@@ skipping 1216 matching lines @@
     </message>
     <message name="IDS_SETTINGS_KEYBOARD_AUTO_REPEAT_RATE" desc="The label for the slider for the auto-repeat rate. The rate is how many times a key repeats per second once auto-repeating has begun.">
       Repeat rate
     </message>
     <message name="IDS_SETTINGS_KEYBOARD_AUTO_REPEAT_RATE_SLOW" desc="The label for the beginning of the auto-repeat rate slider, representing a slow repeat rate.">
       Slow
     </message>
     <message name="IDS_SETTINGS_KEYBOARD_AUTO_REPEAT_FAST" desc="The label for the end of the auto-repeat rate slider, representing a fast repeat rate.">
       Fast
     </message>
+    <message name="IDS_SETTINGS_KEYBOARD_SHOW_KEYBOARD_SHORTCUTS_OVERLAY" desc="The link to open the keyboard shortuts overlay.">
+      View keyboard shortcuts
+    </message>
+    <message name="IDS_SETTINGS_KEYBOARD_SHOW_LANGUAGE_AND_INPUT" desc="The link to navigate to the language and input method settings.">
+      Change language and input settings
+    </message>
 
     <!-- Display -->
     <message name="IDS_SETTINGS_DISPLAY_TITLE" desc="In Device Settings, the title for display settings.">
       Displays
     </message>
     <message name="IDS_SETTINGS_DISPLAY_ARRANGEMENT" desc="In Device Settings > Displays, the label for the display arrangement section.">
       Arrangement
     </message>
     <message name="IDS_SETTINGS_DISPLAY_MIRROR" desc="In Device Settings > Displays, the label for the control for mirroring.">
       Mirror displays
@@ skipping 27 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>