Upstream suggestions for closing stale tabs.

This is the first CL containing our work to assist the user
in closing stale/unused tabs.

Bug: 993826
Change-Id: Ib73d7a18ea9f5415289ef3c73cd79cc80f97c3be
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1753689
Reviewed-by: Wei-Yin Chen (陳威尹) <[email protected]>
Commit-Queue: David Maunder <[email protected]>
Cr-Commit-Position: refs/heads/master@{#690792}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index c1beafea..adae9fa1 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -2284,6 +2284,10 @@
 const char kClickToCallOpenDialerDirectlyDescription[] =
     "Enables opening the dialer directly instead of displaying a notification. "
     "Only available on Android P- and when the screen is on and unlocked.";
+const char kCloseTabSuggestionsStaleName[] = "Suggest to close stale Tabs";
+const char kCloseTabSuggestionsStaleDescription[] =
+    "Suggests to the user to close Tabs that have not been used above a "
+    "threshold such as 1 day. The threshold is configurable.";
 
 const char kClickToCallReceiverName[] =
     "Enable receiver device to handle click to call feature";