Implement app banner info bars on desktop.

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 9f649ef48aa9353cc6ad8c4926d08466f23dd84e..4716b6b2a9b49186cfc14165e618464e8465e1a0 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -7266,6 +7266,17 @@ Keep your key file in a safe place. You will need it to create new versions of y
         </message>
       </if>
 
+      <!-- chromeos bookmark app add to shelf strings -->
+      <message name="IDS_ADD_TO_SHELF_INFOBAR_TITLE" desc="Label displayed in an infobar asking users to add to the site to their shelf">
+        Add this site to your shelf to use it any time.
+      </message>
+      <message name="IDS_ADD_TO_SHELF_INFOBAR_ADD_BUTTON" desc="Text displayed on the button to allow users to add to the site to their shelf">
+        Add
+      </message>
+      <message name="IDS_ADD_TO_SHELF_INFOBAR_NEVER_BUTTON" desc="Text displayed on the button to prevent the add to shelf infobar from ever being displayed for this site">
+        Never for this site
+      </message>
+
       <!-- about:system strings -->
       <if expr="not is_android">
         <message name="IDS_ABOUT_SYS_TITLE" desc="about:system page title">