Standardize usage of virtual/override/final in chrome/

chrome/utility/media_galleries/itunes_library_parser.cc

Index: chrome/utility/media_galleries/itunes_library_parser.cc
diff --git a/chrome/utility/media_galleries/itunes_library_parser.cc b/chrome/utility/media_galleries/itunes_library_parser.cc
index 60f2809f7223ede8fa128c8de70a1f55daec49e3..bf23e6be51d03e9a77c8174631cbbfe185fb4f23 100644
--- a/chrome/utility/media_galleries/itunes_library_parser.cc
+++ b/chrome/utility/media_galleries/itunes_library_parser.cc
@@ -32,12 +32,12 @@ class TrackInfoXmlDictReader : public iapps::XmlDictReader {
   TrackInfoXmlDictReader(XmlReader* reader, TrackInfo* track_info) :
     iapps::XmlDictReader(reader), track_info_(track_info) {}
 
-  virtual bool ShouldLoop() override {
+  bool ShouldLoop() override {
     return !(Found("Track ID") && Found("Location") &&
              Found("Album Artist") && Found("Album"));
   }
 
-  virtual bool HandleKeyImpl(const std::string& key) override {
+  bool HandleKeyImpl(const std::string& key) override {
     if (key == "Track ID") {
       return iapps::ReadInteger(reader_, &track_info_->id);
     } else if (key == "Location") {
@@ -75,9 +75,7 @@ class TrackInfoXmlDictReader : public iapps::XmlDictReader {
     return true;
   }
 
-  virtual bool FinishedOk() override {
-    return Found("Track ID") && Found("Location");
-  }
+  bool FinishedOk() override { return Found("Track ID") && Found("Location"); }
 
  private:
   TrackInfo* track_info_;