Update {virtual,override} to follow C++11 style in chrome.

chrome/renderer/spellchecker/spellcheck_provider_test.h

Index: chrome/renderer/spellchecker/spellcheck_provider_test.h
diff --git a/chrome/renderer/spellchecker/spellcheck_provider_test.h b/chrome/renderer/spellchecker/spellcheck_provider_test.h
index 5c1c5592032504b8d53f48f2182e2206e644ea70..56ab49d517a2993dc8e3ef19af2a03a346ff0f49 100644
--- a/chrome/renderer/spellchecker/spellcheck_provider_test.h
+++ b/chrome/renderer/spellchecker/spellcheck_provider_test.h
@@ -25,10 +25,9 @@ class FakeTextCheckingCompletion : public blink::WebTextCheckingCompletion {
   FakeTextCheckingCompletion();
   ~FakeTextCheckingCompletion();
 
-  virtual void didFinishCheckingText(
+  void didFinishCheckingText(
       const blink::WebVector<blink::WebTextCheckingResult>& results) override;
-  virtual void didCancelCheckingText() override;
-
+  void didCancelCheckingText() override;
 
   size_t completion_count_;
   size_t cancellation_count_;