Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/webui/settings/font_handler.cc

Index: chrome/browser/ui/webui/settings/font_handler.cc
diff --git a/chrome/browser/ui/webui/settings/font_handler.cc b/chrome/browser/ui/webui/settings/font_handler.cc
index b6971aa496f5966f09c5af79b68ef29197d99450..26bbff23ff1525c6c928f64dc0188618900c825c 100644
--- a/chrome/browser/ui/webui/settings/font_handler.cc
+++ b/chrome/browser/ui/webui/settings/font_handler.cc
@@ -47,9 +47,8 @@ void FontHandler::HandleFetchFontsData(const base::ListValue* args) {
                                        callback_id));
 }
 
-void FontHandler::FontListHasLoaded(
-    std::string callback_id,
-    scoped_ptr<base::ListValue> list) {
+void FontHandler::FontListHasLoaded(std::string callback_id,
+                                    std::unique_ptr<base::ListValue> list) {
   // Font list. Selects the directionality for the fonts in the given list.
   for (size_t i = 0; i < list->GetSize(); i++) {
     base::ListValue* font;
@@ -73,9 +72,9 @@ void FontHandler::FontListHasLoaded(
       pref_service->GetString(prefs::kRecentlySelectedEncoding));
   DCHECK(!encodings->empty());
 
-  scoped_ptr<base::ListValue> encoding_list(new base::ListValue());
+  std::unique_ptr<base::ListValue> encoding_list(new base::ListValue());
   for (const auto& it : *encodings) {
-    scoped_ptr<base::ListValue> option(new base::ListValue());
+    std::unique_ptr<base::ListValue> option(new base::ListValue());
     if (it.encoding_id) {
       option->AppendString(
           CharacterEncoding::GetCanonicalEncodingNameByCommandId(