Write last_modified date to Content Settings in the PrefProvider

chrome/browser/ssl/chrome_ssl_host_state_delegate.cc

Index: chrome/browser/ssl/chrome_ssl_host_state_delegate.cc
diff --git a/chrome/browser/ssl/chrome_ssl_host_state_delegate.cc b/chrome/browser/ssl/chrome_ssl_host_state_delegate.cc
index c8fed6e90058b1fbcdf38aad26bbcb187ebaf181..d666b835ad4a66bf50b0b9f799dbba9f850928fe 100644
--- a/chrome/browser/ssl/chrome_ssl_host_state_delegate.cc
+++ b/chrome/browser/ssl/chrome_ssl_host_state_delegate.cc
@@ -145,7 +145,8 @@ void MigrateOldSettings(HostContentSettingsMap* map) {
 bool HostFilterToPatternFilter(
     const base::Callback<bool(const std::string&)>& host_filter,
     const ContentSettingsPattern& primary_pattern,
-    const ContentSettingsPattern& secondary_pattern) {
+    const ContentSettingsPattern& secondary_pattern,
+    base::Time last_modified) {
   // We only ever set origin-scoped exceptions which are of the form
   // "https://<host>:443". That is a valid URL, so we can compare |host_filter|
   // against its host.
@@ -334,7 +335,8 @@ void ChromeSSLHostStateDelegate::Clear(
   // settings deletion is done synchronously on the UI thread, so we can use
   // |host_filter| by reference.
   base::Callback<bool(const ContentSettingsPattern& primary_pattern,
-                      const ContentSettingsPattern& secondary_pattern)>
+                      const ContentSettingsPattern& secondary_pattern,
+                      base::Time last_modified)>
       pattern_filter;
   if (!host_filter.is_null()) {
     pattern_filter =
@@ -343,7 +345,8 @@ void ChromeSSLHostStateDelegate::Clear(
 
   HostContentSettingsMapFactory::GetForProfile(profile_)
       ->ClearSettingsForOneTypeWithPredicate(
-          CONTENT_SETTINGS_TYPE_SSL_CERT_DECISIONS, pattern_filter);
+          CONTENT_SETTINGS_TYPE_SSL_CERT_DECISIONS, std::string(),
+          pattern_filter);
 }
 
 content::SSLHostStateDelegate::CertJudgment