Enforce marking "override" for functions overriding Blink in components/test_runner/.

components/test_runner/spell_check_client.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_TEST_RUNNER_SPELL_CHECK_CLIENT_H_
 #define COMPONENTS_TEST_RUNNER_SPELL_CHECK_CLIENT_H_
 
 #include "base/basictypes.h"
 #include "components/test_runner/mock_spell_check.h"
 #include "components/test_runner/web_task.h"
 #include "third_party/WebKit/public/web/WebSpellCheckClient.h"
 
 namespace test_runner {
 
 class WebTestDelegate;
 class WebTestProxyBase;
 
 class SpellCheckClient : public blink::WebSpellCheckClient {
  public:
   explicit SpellCheckClient(WebTestProxyBase* web_test_proxy);
   virtual ~SpellCheckClient();
 
   void SetDelegate(WebTestDelegate* delegate);
 
   WebTaskList* mutable_task_list() { return &task_list_; }
   MockSpellCheck* MockSpellCheckWord() { return &spell_check_; }
 
   // blink::WebSpellCheckClient implementation.
-  virtual void spellCheck(
+  void spellCheck(
       const blink::WebString& text,
       int& offset,
       int& length,
-      blink::WebVector<blink::WebString>* optional_suggestions);
-  virtual void checkTextOfParagraph(
+      blink::WebVector<blink::WebString>* optional_suggestions) override;
+  void checkTextOfParagraph(
       const blink::WebString& text,
       blink::WebTextCheckingTypeMask mask,
-      blink::WebVector<blink::WebTextCheckingResult>* web_results);
-  virtual void requestCheckingOfText(
+      blink::WebVector<blink::WebTextCheckingResult>* web_results) override;
+  void requestCheckingOfText(
       const blink::WebString& text,
       const blink::WebVector<uint32_t>& markers,
       const blink::WebVector<unsigned>& marker_offsets,
-      blink::WebTextCheckingCompletion* completion);
-  virtual blink::WebString autoCorrectWord(const blink::WebString& word);
+      blink::WebTextCheckingCompletion* completion) override;
+  blink::WebString autoCorrectWord(const blink::WebString& word) override;
 
  private:
   void FinishLastTextCheck();
 
   // The mock spellchecker used in spellCheck().
   MockSpellCheck spell_check_;
 
   blink::WebString last_requested_text_check_string_;
   blink::WebTextCheckingCompletion* last_requested_text_checking_completion_;
 
   WebTaskList task_list_;
 
   WebTestDelegate* delegate_;
 
   WebTestProxyBase* web_test_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(SpellCheckClient);
 };
 
 }  // namespace test_runner
 
 #endif  // COMPONENTS_TEST_RUNNER_SPELL_CHECK_CLIENT_H_