Read later: Use plural strings for reading list strings.

Change two strings to plural strings. e.g. "1 unread pages" to "1 unread
page".

Bug: 1133496
Change-Id: Iecccc6f87feaef3e1237e09f72d16f64d002bd42
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2531494Reviewed-by: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#826342}

chrome/android/expectations/lint-suppressions.xml

@@ -243,8 +243,8 @@ Still reading?
     <ignore regexp="The resource `R.string.reading_list_mark_as_read` appears to be unused"/>
     <ignore regexp="The resource `R.string.reading_list_share` appears to be unused"/>
     <ignore regexp="The resource `R.string.reading_list_reminder_notification_title` appears to be unused"/>
-    <ignore regexp="The resource `R.string.reading_list_reminder_notification_subtitle` appears to be unused"/>
-    <ignore regexp="The resource `R.string.reading_list_unread_page_count` appears to be unused"/>
+    <ignore regexp="The resource `R.plurals.reading_list_reminder_notification_subtitle` appears to be unused"/>
+    <ignore regexp="The resource `R.plurals.reading_list_unread_page_count` appears to be unused"/>
     <ignore regexp="The resource `R.string.reading_list_intro_text` appears to be unused"/>
     <ignore regexp="The resource `R.string.reading_list_find_in_bookmarks` appears to be unused"/>
 

chrome/browser/ui/android/strings/android_chrome_strings.grd

@@ -3100,10 +3100,14 @@ Data from your Incognito session will only be cleared from Chrome when you <ph n
         Catch up on your reading list
       </message>
       <message name="IDS_READING_LIST_REMINDER_NOTIFICATION_SUBTITLE" desc="The subtitle of the reminder notification for reading list.">
-        You have <ph name="READING_LIST_COUNT">%1$d<ex>5</ex></ph> pages
+          {READING_LIST_REMINDER_NOTIFICATION_SUBTITLE, plural,
+          =1 {You have <ph name="READING_LIST_REMINDER_NOTIFICATION_SUBTITLE_ONE">%1$d<ex>1</ex></ph> page}
+          other {You have <ph name="READING_LIST_REMINDER_NOTIFICATION_SUBTITLE_MANY">%1$d<ex>8</ex></ph> pages}}
       </message>
       <message name="IDS_READING_LIST_UNREAD_PAGE_COUNT" desc="Inform the user about the number of unread reading list items.">
-        <ph name="READING_LIST_COUNT">%1$d<ex>5</ex></ph> unread pages
+          {READING_LIST_UNREAD_PAGE_COUNT, plural,
+          =1 {<ph name="READING_LIST_UNREAD_PAGE_COUNT_ONE">%1$d<ex>1</ex></ph> unread page}
+          other {<ph name="READING_LIST_UNREAD_PAGE_COUNT_MANY">%1$d<ex>8</ex></ph> unread pages}}
       </message>
       <message name="IDS_READING_LIST_INTRO_TEXT" desc="The text on the reading list in product help bubble and other UIs to introduce the feature to the user.">
         Save this page for later and get a reminder

chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_READING_LIST_REMINDER_NOTIFICATION_SUBTITLE.png.sha1

-cabd9ef05333b9cd70a80d6bcd098f2e3cfc79a3
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+b366fdfcc28d3a0635d42d2a82d41edbd2b81839
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chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_READING_LIST_UNREAD_PAGE_COUNT.png.sha1

-b302afc7ddb74ee440231bab12d569521da35c25
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+30fcf482e4a668986d4bec19f0d6d2e4d5504490
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