Update from chromium https://crrev.com/301725/

net/proxy/proxy_script_decider_unittest.cc

Index: net/proxy/proxy_script_decider_unittest.cc
diff --git a/net/proxy/proxy_script_decider_unittest.cc b/net/proxy/proxy_script_decider_unittest.cc
index ee2958cb801dbde73b24211b90b0b0c9c00c5f10..8914f5beed50d265614ba675fbda760505922304 100644
--- a/net/proxy/proxy_script_decider_unittest.cc
+++ b/net/proxy/proxy_script_decider_unittest.cc
@@ -310,7 +310,7 @@ class ProxyScriptDeciderQuickCheckTest : public ::testing::Test {
       : rule_(rules_.AddSuccessRule("http://wpad/wpad.dat")),
         fetcher_(&rules_) { }
 
-  virtual void SetUp() override {
+  void SetUp() override {
     request_context_.set_host_resolver(&resolver_);
     fetcher_.SetRequestContext(&request_context_);
     config_.set_auto_detect(true);