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

net/url_request/url_fetcher_impl_unittest.cc

Index: net/url_request/url_fetcher_impl_unittest.cc
diff --git a/net/url_request/url_fetcher_impl_unittest.cc b/net/url_request/url_fetcher_impl_unittest.cc
index d90d9f60753fcc81a48111d0904a094181a111eb..eb52756275744a6725a9cf07326e293ad222b5e8 100644
--- a/net/url_request/url_fetcher_impl_unittest.cc
+++ b/net/url_request/url_fetcher_impl_unittest.cc
@@ -179,7 +179,7 @@ class FetcherTestURLRequestContext : public TestURLRequestContext {
     context_storage_.set_host_resolver(
         std::unique_ptr<HostResolver>(mock_resolver_));
     context_storage_.set_throttler_manager(
-        base::WrapUnique(new URLRequestThrottlerManager()));
+        base::MakeUnique<URLRequestThrottlerManager>());
     Init();
   }