Properly construct 'less than' sentences

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 2f5317cde767c4977d8bc215a7bc6192d725b1bc..154703700407aac7acc5375a17e78e463e4ce586 100644
--- a/components/browsing_data_strings.grdp
+++ b/components/browsing_data_strings.grdp
@@ -22,12 +22,15 @@
   <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.">
+  <message name="IDS_DEL_CACHE_COUNTER_BASIC" desc="A counter showing the size of the users's cache including '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>
+  <message name="IDS_DEL_CACHE_COUNTER_UPPER_ESTIMATE_BASIC" desc="A counter showing an upper estimate of the size of the users's cache including 'x MB' as $1 and explaining that the cache is used to speed up the loading of websites.">

[msramek, 2017/06/09 14:15:10]

The translation console will show a [SIZE] placeholder rather than $1. I would
say something like

"[...] showing an upper estimate of the user's cache. The estimate (e.g. "328
MB" will be substituted). [...]"

+    Frees up less than <ph name="SIZE">$1<ex>328 MB</ex></ph>. Some sites may load more slowly on your next visit.
+  </message>
+  <message name="IDS_DEL_CACHE_COUNTER_ALMOST_EMPTY_BASIC" desc="A counter showing that the user's cache is almost empty and explaining that the cache is used to speed up the loading of websites.">
+    Frees up less than 1 MB. Some sites may load more slowly on your next visit.
+  </message>
   <message name="IDS_DEL_PASSWORDS_COUNTER" desc="A counter showing how many passwords the user has.">
     {COUNT, plural,
      =0 {None}