Save and load snapshots async

 Bug: 5416822

Change-Id: I213c3507af61e7ca0354dad7e72ece7a2547f54e
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 95d383c..90ec428 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -215,6 +215,8 @@
     <string name="share_page">Share page</string>
     <!-- Menu item for saving a page for offline reading. This is a view-only snapshot of the page. [CHAR LIMIT=50] -->
     <string name="menu_save_snapshot">Save for offline reading</string>
+    <!-- Dialog message that is shown while saving a page for offline reading. [CHAR LIMIT=50] -->
+    <string name="saving_snapshot">Saving\u2026</string>
     <!-- Toast informing the user that saving the page for offline reading has failed. [CHAR LIMIT=50] -->
     <string name="snapshot_failed">Couldn\'t save for offline reading.</string>
     <!-- The number of bookmarks in a folder [CHAR LIMT=50] -->