Read later: update flag title and description.

Update title and description for read later flag on Desktop to be
clearer for use in Chrome Labs. Also update flag title for read later
flag on Android.

Bug: 1109316
Change-Id: Ibefd60b80f3338df0985e6f60b65f2b2a19eace1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2574657
Commit-Queue: Caroline Rising <corising@chromium.org>
Reviewed-by: Charlene Yan <cyan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842145}

chrome/browser/flag_descriptions.cc

@@ -1947,12 +1947,6 @@ const char kRawClipboardDescription[] =
     "Allows raw / unsanitized clipboard content to be read and written. "
     "See https://github.com/WICG/raw-clipboard-access.";
 
-const char kReadLaterFlagId[] = "read-later";
-const char kReadLaterName[] = "Read Later";
-const char kReadLaterDescription[] =
-    "Allow users to save tabs for later. Enables a new button and menu for "
-    "accessing tabs saved for later.";
-
 const char kRecordWebAppDebugInfoName[] = "Record web app debug info";
 const char kRecordWebAppDebugInfoDescription[] =
     "Enables recording additional web app related debugging data to be "
@@ -3065,6 +3059,12 @@ const char kQueryTilesSwapTrendingDescription[] =
     "Swap trending queries if user didn't click on them after several "
     "impressions";
 
+const char kReadLaterFlagId[] = "read-later";
+const char kReadLaterName[] = "Reading List";
+const char kReadLaterDescription[] =
+    "Allow users to save tabs for later. Enables a new button and menu for "
+    "accessing tabs saved for later.";
+
 const char kReaderModeHeuristicsName[] = "Reader Mode triggering";
 const char kReaderModeHeuristicsDescription[] =
     "Determines what pages the Reader Mode infobar is shown on.";
@@ -3485,6 +3485,12 @@ const char kPasswordsWeaknessCheckName[] = "Passwords weakness check";
 const char kPasswordsWeaknessCheckDescription[] =
     "Enables checking passwords for weakness in Password Check";
 
+const char kReadLaterFlagId[] = "read-later";
+const char kReadLaterName[] = "Reading List";
+const char kReadLaterDescription[] =
+    "Click on the Bookmark icon or right click on a tab to add tabs to a "
+    "reading list.";
+
 const char kSCTAuditingName[] = "SCT auditing";
 const char kSCTAuditingDescription[] =
     "Enables SCT auditing for users who have opted in to Safe Browsing "