MD Settings: About page, implementing detailed build info.

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 45586f35dc009e262c2424889f35e495c80a0828..5086b293b70b5cbf474bb59300d949086e5dfcbe 100644
--- a/chrome/app/settings_strings.grdp
+++ b/chrome/app/settings_strings.grdp
@@ -1,6 +1,22 @@
 <?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_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.">
+      beta
+    </message>
+    <message name="IDS_SETTINGS_ABOUT_PAGE_CURRENT_CHANNEL_DEV" desc="The dev label in the message about current channel.">
+      dev
+    </message>
+    <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>
+  </if>
+
   <!-- 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>