Start showing basic infobars for manifest apps

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 cec3910dd0ae635251dee02be7ea473e7094e0eb..870431192911aeeda798c9eecc6d29ba47fa8ce6 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -15003,13 +15003,16 @@ Do you accept?
          If enabled, EmbeddedSearch API will be used to submit search queries in the search results page.
         </message>
 
-        <!-- App install alerts flags -->
+        <!-- App install alerts strings -->
         <message name="IDS_FLAGS_ENABLE_APP_INSTALL_ALERTS_NAME" desc="Title for the flag to allow app install alerts">
           Enable app install alerts
         </message>
         <message name="IDS_FLAGS_ENABLE_APP_INSTALL_ALERTS_DESCRIPTION" desc="Description to allow app install alerts">
           If enabled, websites will be parsed for app install alert meta tags.
         </message>
+        <message name="IDS_APP_INSTALL_ALERTS_ADD_TO_HOMESCREEN" desc="Infobar button text indicating that an app can be added to the home screen.">
+          Add to homescreen
+        </message>
 
         <!-- Flag strings for seccomp-bpf sandbox flag. -->
         <message name="IDS_FLAGS_ENABLE_SECCOMP_FILTER_SANDBOX_ANDROID_NAME" desc="Title for the flag to enable the seccomp-bpf sandbox on Android.">