Standardize usage of virtual/override/final specifiers.

components/variations/net/variations_http_header_provider_unittest.cc

 // 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.
 
 #include "components/variations/net/variations_http_header_provider.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 38 matching lines @@
 
   return trial;
 }
 
 }  // namespace
 
 class VariationsHttpHeaderProviderTest : public ::testing::Test {
  public:
   VariationsHttpHeaderProviderTest() {}
 
-  virtual ~VariationsHttpHeaderProviderTest() {}
+  ~VariationsHttpHeaderProviderTest() override {}
 
-  virtual void TearDown() override {
-    testing::ClearAllVariationIDs();
-  }
+  void TearDown() override { testing::ClearAllVariationIDs(); }
 };
 
 TEST_F(VariationsHttpHeaderProviderTest, ShouldAppendHeaders) {
   struct {
     const char* url;
     bool should_append_headers;
   } cases[] = {
         {"http://google.com", true},
         {"http://www.google.com", true},
         {"http://m.google.com", true},
@@ skipping 157 matching lines @@
   headers.GetHeader("X-Client-Data", &variations);
 
   std::set<VariationID> variation_ids;
   std::set<VariationID> trigger_ids;
   ASSERT_TRUE(ExtractVariationIds(variations, &variation_ids, &trigger_ids));
   EXPECT_TRUE(variation_ids.find(123) != variation_ids.end());
   EXPECT_TRUE(trigger_ids.find(456) != trigger_ids.end());
 }
 
 }  // namespace variations