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

net/http/mock_http_cache.cc

Index: net/http/mock_http_cache.cc
diff --git a/net/http/mock_http_cache.cc b/net/http/mock_http_cache.cc
index 560ae9c80daa5217f405550c9a08fb8b1ad2fbde..9fc8ced93ce4c502f56f42508b8abc454208cd9b 100644
--- a/net/http/mock_http_cache.cc
+++ b/net/http/mock_http_cache.cc
@@ -541,11 +541,11 @@ int MockBackendFactory::CreateBackend(
 //-----------------------------------------------------------------------------
 
 MockHttpCache::MockHttpCache()
-    : MockHttpCache(base::WrapUnique(new MockBackendFactory())) {}
+    : MockHttpCache(base::MakeUnique<MockBackendFactory>()) {}
 
 MockHttpCache::MockHttpCache(
     std::unique_ptr<HttpCache::BackendFactory> disk_cache_factory)
-    : http_cache_(base::WrapUnique(new MockNetworkLayer()),
+    : http_cache_(base::MakeUnique<MockNetworkLayer>(),
                   std::move(disk_cache_factory),
                   true) {}