Change "Read" header in Reading List

ios/chrome/app/strings/ios_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definition of resources that will be translated for each
 locale.  The strings in this file are specific to iOS.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       output_all_resource_defines="false" source_lang_id="en" enc_check="möl">
   <outputs>
@@ skipping 1056 matching lines @@
       </message>
       <message name="IDS_IOS_READING_LIST_MARK_BUTTON" desc="Label of the button to mark the selected reading list as either read or unread [Length: 15em]" meaning="Display options letting the user mark all the selected entries as read or as unread. [Length: 15em]">
         Mark…
       </message>
       <message name="IDS_IOS_READING_LIST_MARK_READ_BUTTON" desc="Label of the button to mark selected reading list entries as 'Read' [Length: 15em]" meaning="Mark selected entries as read. [Length: 15em]">
         Mark Read
       </message>
       <message name="IDS_IOS_READING_LIST_MARK_UNREAD_BUTTON" desc="Label of the button to mark selected reading list entries as 'Unread' [Length: 15em]" meaning="Mark selected entries as unread. [Length: 15em]">
         Mark Unread
       </message>
-      <message name="IDS_IOS_READING_LIST_READ_HEADER" desc="Header for the list containing the read reading list entries" meaning="The entries below this header are read. [Length: 15em]">
-        Read
+      <message name="IDS_IOS_READING_LIST_READ_HEADER" desc="Heading. Appears above a list of articles the user has already read, in their Reading List. Appears on the same page as an 'Unread' heading, which contains articles the user hasn't read yet. In English, 'Read' can be both verb and adjective so we needed to be more explicit. Does not need to be translated literally. [Length: 40em]" meaning="The entries below this header are read. [Length: 40em]">
+        Pages You've Read
       </message>
       <message name="IDS_IOS_READING_LIST_UNREAD_HEADER" desc="Header for the list containing the unread reading list entries" meaning="The entries below this header are unread. [Length: 15em]">
         Unread
       </message>
       <message name="IDS_IOS_RECENT_TABS_DISCLOSURE_VIEW_COLLAPSED_HINT" desc="The accessibility hint spoken to signify that the given cell expands the given section when tapped.">
         Expands the section.
       </message>
       <message name="IDS_IOS_RECENT_TABS_DISCLOSURE_VIEW_EXPANDED_HINT" desc="The accessibility hint spoken to signify that the given cell collapses the given section when tapped.">
         Collapses the section.
       </message>
@@ skipping 429 matching lines @@
       </message>
       <message name="IDS_IOS_VOICE_SEARCH_SETTING_TITLE" desc="The title for Voice Search setting [Length: 29em] [iOS only]">
         Voice Search
       </message>
       <message name="IDS_IOS_VOICE_SEARCH_SETTING_TTS" desc="The label for setting switch enabling text-to-speech response after voice search [Length: 29em] [iOS only]">
         Speak Answers Back
       </message>
     </messages>
   </release>
 </grit>