MD Settings: About page, updating buttons based on current update status.

chrome/app/settings_strings.grdp

Index: chrome/app/settings_strings.grdp
diff --git a/chrome/app/settings_strings.grdp b/chrome/app/settings_strings.grdp
index 98fbd6581bfd02a91f8512964613a5c226a6ab92..838cfb27a39a1398ccdcde0f7a3149d0f40e4ed2 100644
--- a/chrome/app/settings_strings.grdp
+++ b/chrome/app/settings_strings.grdp
@@ -3,7 +3,10 @@
 <grit-part>
   <!-- About Page -->
   <if expr="chromeos">
-   <message name="IDS_SETTINGS_ABOUT_PAGE_CURRENT_CHANNEL_STABLE" desc="The stable label in the message about current channel.">
+    <message name="IDS_SETTINGS_ABOUT_PAGE_CHECK_FOR_UPDATES" desc="The button label to check for updates and apply (download and install) if found">
+      Check for updates
+    </message>
+    <message name="IDS_SETTINGS_ABOUT_PAGE_CURRENT_CHANNEL_STABLE" desc="The stable label in the message about current channel.">
       stable
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_CURRENT_CHANNEL_BETA" desc="The beta label in the message about current channel.">
@@ -15,6 +18,12 @@
     <message name="IDS_SETTINGS_ABOUT_PAGE_CURRENT_CHANNEL" desc="The message about current channel.">
       Currently on <ph name="CHANNEL_NAME">$1<ex>stable</ex></ph>
     </message>
+    <message name="IDS_SETTINGS_ABOUT_PAGE_RELAUNCH" desc="The label for the relaunch button that relaunches the browser once update is complete">
+      Restart
+    </message>
+    <message name="IDS_SETTINGS_ABOUT_PAGE_RELAUNCH_AND_POWERWASH" desc="The label for the  button that relaunches and powerwashes the browser once update is complete">
+      Relaunch and Powerwash
+    </message>
     <message name="IDS_SETTINGS_UPGRADE_UPDATING" desc="Status label: Updating ChromiumOS or ChromeOS">
       Updating your device
     </message>
@@ -31,6 +40,11 @@
       Your <ph name="DEVICE_TYPE">$1<ex>Chromebook</ex></ph> is up to date.
     </message>
   </if>
+  <if expr="not chromeos">
+    <message name="IDS_SETTINGS_ABOUT_PAGE_RELAUNCH" desc="The label for the relaunch button that relaunches the browser once update is complete">
+      Relaunch
+    </message>
+  </if>
   <if expr="_google_chrome">
     <message name="IDS_SETTINGS_ABOUT_PAGE_REPORT_AN_ISSUE" desc="Text of the button which allows the user to report an issue with Chrome.">
       Report an issue