Add context menu for ContentSuggestions

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 525 matching lines @@
       </message>
       <message name="IDS_IOS_CONTENT_CONTEXT_OPENLINKNEWTAB" desc="The iOS menu item for opening a link in another tab. Shorter than the desktop version [iOS only]">
         Open in New Tab
       </message>
       <message name="IDS_IOS_CONTENT_CONTEXT_SAVEIMAGE" desc="The name of the Save Image As command in the content area context menu">
         Save Image
       </message>
       <message name="IDS_IOS_CONTENT_CONTEXT_DOWNLOADIMAGE" desc="The name of the Download Image command in the content area context menu">
         Download Image
       </message>
+      <message name="IDS_IOS_CONTENT_SUGGESTIONS_DELETE" desc="The name of the Delete command in the Content Suggestions articles context menu">
+        Delete
+      </message>
       <message name="IDS_IOS_CONTENT_SETTINGS_TITLE" desc="Title for content settings dialog [Length: 29em] [iOS only]">
         Content Settings
       </message>
       <message name="IDS_IOS_CONTEXTUAL_SEARCH_DESCRIPTION" desc="Description for Contextual Search preference">
         Learn about topics on websites without leaving the page. Touch to Search sends a word and its surrounding context to Google Search, returning definitions, pictures, search results, and other details.
 
 To adjust your search term, long press to select. To refine your search, slide the panel all the way up and touch the search box.
       </message>
       <message name="IDS_IOS_CONTEXTUAL_SEARCH_GOT_IT_BUTTON" desc="A button to confirm and dismiss opt out promo">
         Allow
@@ skipping 995 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>