Standardize usage of virtual/override/final in chrome/browser/

chrome/browser/spellchecker/spellcheck_custom_dictionary_unittest.cc

Index: chrome/browser/spellchecker/spellcheck_custom_dictionary_unittest.cc
diff --git a/chrome/browser/spellchecker/spellcheck_custom_dictionary_unittest.cc b/chrome/browser/spellchecker/spellcheck_custom_dictionary_unittest.cc
index 7b54dd7dbdfaf9ad7bed9d413e548dde1dafbabc..ea63572eef9dcd6f15149c37223b14fcfcde2022 100644
--- a/chrome/browser/spellchecker/spellcheck_custom_dictionary_unittest.cc
+++ b/chrome/browser/spellchecker/spellcheck_custom_dictionary_unittest.cc
@@ -118,10 +118,10 @@ class SyncErrorFactoryStub : public syncer::SyncErrorFactory {
  public:
   explicit SyncErrorFactoryStub(int* error_counter)
       : error_counter_(error_counter) {}
-  virtual ~SyncErrorFactoryStub() {}
+  ~SyncErrorFactoryStub() override {}
 
   // Overridden from syncer::SyncErrorFactory:
-  virtual syncer::SyncError CreateAndUploadError(
+  syncer::SyncError CreateAndUploadError(
       const tracked_objects::Location& location,
       const std::string& message) override {
     (*error_counter_)++;
@@ -146,9 +146,11 @@ class DictionaryObserverCounter : public SpellcheckCustomDictionary::Observer {
   int changes() const { return changes_; }
 
   // Overridden from SpellcheckCustomDictionary::Observer:
-  virtual void OnCustomDictionaryLoaded() override { loads_++; }
-  virtual void OnCustomDictionaryChanged(
-      const SpellcheckCustomDictionary::Change& change) override { changes_++; }
+  void OnCustomDictionaryLoaded() override { loads_++; }
+  void OnCustomDictionaryChanged(
+      const SpellcheckCustomDictionary::Change& change) override {
+    changes_++;
+  }
 
  private:
   int loads_;