Count number of origins with data affected by clearing "cookies and site data".

chrome/browser/browsing_data/browsing_data_counter_utils.cc

Index: chrome/browser/browsing_data/browsing_data_counter_utils.cc
diff --git a/chrome/browser/browsing_data/browsing_data_counter_utils.cc b/chrome/browser/browsing_data/browsing_data_counter_utils.cc
index c28cceaf1e829e9086bc8a0faf6fdc48feb31ff7..502eaccb3790700bfa34cdaed6bf6ee08ad02d5d 100644
--- a/chrome/browser/browsing_data/browsing_data_counter_utils.cc
+++ b/chrome/browser/browsing_data/browsing_data_counter_utils.cc
@@ -81,6 +81,17 @@ base::string16 GetChromeCounterTextFromResult(
     return l10n_util::GetStringUTF16(IDS_DEL_CACHE_COUNTER_ALMOST_EMPTY);
   }
 
+  if (pref_name == browsing_data::prefs::kDeleteCookies) {
+    // Cookie counter.
+    browsing_data::BrowsingDataCounter::ResultInt origin_count =
+        static_cast<const browsing_data::BrowsingDataCounter::FinishedResult*>(
+            result)
+            ->Value();
+    std::ostringstream result;
+    result << origin_count;
+    return base::UTF8ToUTF16(result.str());

[msramek, 2017/01/09 12:54:43]

We should definitely output more than just a number - something like "%d sites"
/ "%d websites" etc. (check what's in the mocks). Please add the new string to
generated_resources.grd.

[dullweber, 2017/01/09 16:05:45]

I added the new string from the discussion document: "42 sites use cookies.
Cookies keep you signed in to your favorite sites.". There are also other
strings in the slides from Max. "For 42 sites" and a two line string that is
probably too long for the current ui.

+  }
+
   if (pref_name == browsing_data::prefs::kDeleteMediaLicenses) {
     const MediaLicensesCounter::MediaLicenseResult* media_license_result =
         static_cast<const MediaLicensesCounter::MediaLicenseResult*>(result);