Re-write many calls to WrapUnique() with MakeUnique()

chrome/test/chromedriver/net/url_request_context_getter.cc

Index: chrome/test/chromedriver/net/url_request_context_getter.cc
diff --git a/chrome/test/chromedriver/net/url_request_context_getter.cc b/chrome/test/chromedriver/net/url_request_context_getter.cc
index d9c809d1ee8bc41f06fdb5abc126a78f2e78c4d6..21b32a397fee3502a42acc639e6f54ddeee83c4d 100644
--- a/chrome/test/chromedriver/net/url_request_context_getter.cc
+++ b/chrome/test/chromedriver/net/url_request_context_getter.cc
@@ -24,8 +24,9 @@ net::URLRequestContext* URLRequestContextGetter::GetURLRequestContext() {
     // net::HttpServer fails to parse headers if user-agent header is blank.
     builder.set_user_agent("chromedriver");
     builder.DisableHttpCache();
-    builder.set_proxy_config_service(base::WrapUnique(
-        new net::ProxyConfigServiceFixed(net::ProxyConfig::CreateDirect())));
+    builder.set_proxy_config_service(
+        base::MakeUnique<net::ProxyConfigServiceFixed>(
+            net::ProxyConfig::CreateDirect()));
     url_request_context_ = builder.Build();
   }
   return url_request_context_.get();