MD Settings: drop subpage arrow from default browser section

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- About Page -->
   <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
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_ARC_VERSION" desc="Label for ARC version">
       ARC Version
@@ skipping 380 matching lines @@
         Access your passwords from any device at <ph name="BEGIN_LINK">&lt;a is="action-link" href="$1" target="_blank"&gt;</ph>passwords.google.com<ph name="END_LINK">&lt;/a&gt;</ph>
       </message>
     </else>
   </if>
 
   <!-- Default Browser Page -->
   <if expr="not chromeos">
     <message name="IDS_SETTINGS_DEFAULT_BROWSER" desc="Name of the Default Browser page, which allows users to set which browser will open .html files within the OS.">
       Default browser
     </message>
+    <message name="IDS_SETTINGS_DEFAULT_BROWSER_MAKE_DEFAULT_BUTTON" desc="Text of the button used to make Chrome the default browser on the user's system.">
+      Make default
+    </message>
   </if>
 
   <!-- Bluetooth Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_BLUETOOTH" desc="Name of the settings page which displays bluetooth device settings.">
       Bluetooth
     </message>
     <message name="IDS_SETTINGS_BLUETOOTH_ADD_DEVICE" desc="Name of the settings page for adding bluetooth devices.">
       Add a Device
     </message>
@@ skipping 1954 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>