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

chrome/browser/local_discovery/privet_url_fetcher_unittest.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/local_discovery/privet_url_fetcher.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 10 matching lines @@
 
 const char kSampleParsableJSON[] = "{ \"hello\" : 2 }";
 const char kSampleUnparsableJSON[] = "{ \"hello\" : }";
 const char kSampleJSONWithError[] = "{ \"error\" : \"unittest_example\" }";
 
 class MockPrivetURLFetcherDelegate : public PrivetURLFetcher::Delegate {
  public:
   MockPrivetURLFetcherDelegate() : raw_mode_(false) {
   }
 
-  virtual ~MockPrivetURLFetcherDelegate() {
+  ~MockPrivetURLFetcherDelegate() override {
   }
 
-  virtual void OnError(PrivetURLFetcher* fetcher,
-                       PrivetURLFetcher::ErrorType error) override {
+  void OnError(PrivetURLFetcher* fetcher,
+               PrivetURLFetcher::ErrorType error) override {
     OnErrorInternal(error);
   }
 
   MOCK_METHOD1(OnErrorInternal, void(PrivetURLFetcher::ErrorType error));
 
-  virtual void OnParsedJson(PrivetURLFetcher* fetcher,
-                            const base::DictionaryValue& value,
-                            bool has_error) override {
+  void OnParsedJson(PrivetURLFetcher* fetcher,
+                    const base::DictionaryValue& value,
+                    bool has_error) override {
     saved_value_.reset(value.DeepCopy());
     OnParsedJsonInternal(has_error);
   }
 
   MOCK_METHOD1(OnParsedJsonInternal, void(bool has_error));
 
   virtual void OnNeedPrivetToken(
       PrivetURLFetcher* fetcher,
       const PrivetURLFetcher::TokenCallback& callback) {
   }
@@ skipping 258 matching lines @@
   std::string header_token;
   ASSERT_FALSE(headers.GetHeader("X-Privet-Token", &header_token));
   ASSERT_FALSE(headers.GetHeader("X-Privet-Auth", &header_token));
   ASSERT_TRUE(headers.GetHeader("Authorization", &header_token));
   ASSERT_EQ("MyAuthToken", header_token);
 }
 
 }  // namespace
 
 }  // namespace local_discovery