Fix 'Less than 1 MB' used inside a sentence

components/browsing_data_strings.grdp

Index: components/browsing_data_strings.grdp
diff --git a/components/browsing_data_strings.grdp b/components/browsing_data_strings.grdp
index a2a61afa0733f1c9fc01b6bbc6f0cb23371c3b1a..993cd7f373efe3aebc87164cdb822fa3ec4beb76 100644
--- a/components/browsing_data_strings.grdp
+++ b/components/browsing_data_strings.grdp
@@ -22,6 +22,9 @@
   <message name="IDS_DEL_CACHE_COUNTER_ALMOST_EMPTY" desc="A counter showing that the user's cache is almost empty, having less than 1 MB of data.">
     Less than 1 MB
   </message>
+  <message name="IDS_DEL_CACHE_COUNTER_ALMOST_EMPTY_BASIC" desc="Text showing that the user has less than 1 MB of data. It will be included in the sentence 'Frees up $1.'">
+    less than 1 MB
+  </message>
   <message name="IDS_DEL_CACHE_COUNTER_BASIC" desc="A counter showing the size of the users's cache including either 'x MB' or 'less than x MB' as $1 and explaining that the cache is used to speed up the loading of websites.">
     Frees up <ph name="SIZE">$1<ex>328 MB</ex></ph>. Some sites may load more slowly on your next visit.
   </message>