Move search_bar_expanded into common

In the process of moving this, I also found and fixed
two bugs.
1) Text size was set incorrectly (looked like a typo)
2) The "up button" used the "content overflow"s content
   description

Change-Id: I8d1f1904e3091461f964ba98483a9afbce05fecd
diff --git a/res-common/values/strings.xml b/res-common/values/strings.xml
index 3f195ad..095157f 100644
--- a/res-common/values/strings.xml
+++ b/res-common/values/strings.xml
@@ -808,4 +808,15 @@
     <!-- Font family used when drawing letters for letter tile avatars.
          Do not translate. -->
     <string name="letter_tile_letter_font_family">sans-serif-thin</string>
+
+    <!-- Content description for the fake action menu up button as used
+     inside search. [CHAR LIMIT=NONE] -->
+    <string name="action_menu_back_from_search">stop searching</string>
+
+    <!--  String describing the icon used to clear the search field -->
+    <string name="description_clear_search">Clear search</string>
+
+    <!-- The font-family to use for the text inside the searchbox.
+         Do not translate. -->
+    <string name="search_font_family">sans-serif</string>
 </resources>