Fixing accessibility description for apps search box

Change-Id: I9c6c85eeec5e54dd29867c58ead7ce43acdc7cb1
diff --git a/res/layout/all_apps.xml b/res/layout/all_apps.xml
index ad1fa82..32a3c3b 100644
--- a/res/layout/all_apps.xml
+++ b/res/layout/all_apps.xml
@@ -94,6 +94,7 @@
                 android:scrollHorizontally="true"
                 android:singleLine="true"
                 android:textColor="#4c4c4c"
+                android:contentDescription="@string/all_apps_search_bar_hint"
                 android:textColorHint="@drawable/all_apps_search_hint"
                 android:textSize="16sp" />
         </FrameLayout>