Replace string16 with base::string16 in chrome/browser

TBR=sky

Review URL: https://codereview.chromium.org/114193006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240689 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/ui/website_settings/website_settings.cc b/chrome/browser/ui/website_settings/website_settings.cc
index ff80174..2c5a5fc 100644
--- a/chrome/browser/ui/website_settings/website_settings.cc
+++ b/chrome/browser/ui/website_settings/website_settings.cc
@@ -656,7 +656,7 @@
 
 void WebsiteSettings::PresentHistoryInfo(base::Time first_visit) {
   if (first_visit == base::Time()) {
-    ui_->SetFirstVisit(string16());
+    ui_->SetFirstVisit(base::string16());
     return;
   }