Add page info strings for offline pages.

ios/chrome/app/strings/ios_strings.grd

Index: ios/chrome/app/strings/ios_strings.grd
diff --git a/ios/chrome/app/strings/ios_strings.grd b/ios/chrome/app/strings/ios_strings.grd
index 77560a58a8ca16c7dbdcfef674f47d2f8638dade..08da52d73c5889fa882a02ad6dbbcdd2fb132197 100644
--- a/ios/chrome/app/strings/ios_strings.grd
+++ b/ios/chrome/app/strings/ios_strings.grd
@@ -903,6 +903,15 @@ Handoff must also be enabled in the General section of Settings, and your device
       <message name="IDS_IOS_OPTIONS_WEB_SERVICES_LABEL" desc="Title for group of web services items in Privacy settings table, including Show Suggestions, Preload Webpages, and Send Usage Data. [Length: 10em] [iOS only]">
         Web Services
       </message>
+      <message name="IDS_IOS_PAGE_INFO_OFFLINE_PAGE" desc="Message to display in the page info bubble when the page you are on is an offline page.">
+        The page has been saved locally to your Reading List.
+      </message>
+      <message name="IDS_IOS_PAGE_INFO_OFFLINE_TITLE" desc="Title of the message to display in the page info bubble when the page you are on is an offline page.">
+        Viewing in Offline Mode
+      </message>
+      <message name="IDS_IOS_PAGE_INFO_RELOAD" desc="Button title in the page info bubble that allows to reload the current page.">
+        Reload
+      </message>
       <message name="IDS_IOS_PAGE_INFO_SECURITY_BUTTON_ACCESSIBILITY_LABEL" desc="The accessibility text for the page security info button">
         Page Security Info
       </message>