[Sync] Rewriting ".reset(new" pattern to use "= base::MakeUnique" instead.

components/sync/driver/data_type_manager_impl_unittest.cc

Index: components/sync/driver/data_type_manager_impl_unittest.cc
diff --git a/components/sync/driver/data_type_manager_impl_unittest.cc b/components/sync/driver/data_type_manager_impl_unittest.cc
index b76ff19e53597852eb4c927d86f8fc5a34ebf484..ed25e0d0a4102cb07fe44fbf3caedef5e1f027d2 100644
--- a/components/sync/driver/data_type_manager_impl_unittest.cc
+++ b/components/sync/driver/data_type_manager_impl_unittest.cc
@@ -262,9 +262,9 @@ class SyncDataTypeManagerImplTest : public testing::Test {
 
  protected:
   void SetUp() override {
-    dtm_.reset(new TestDataTypeManager(WeakHandle<DataTypeDebugInfoListener>(),
-                                       &configurer_, &controllers_,
-                                       &encryption_handler_, &observer_));
+    dtm_ = base::MakeUnique<TestDataTypeManager>(
+        WeakHandle<DataTypeDebugInfoListener>(), &configurer_, &controllers_,
+        &encryption_handler_, &observer_);
   }
 
   void SetConfigureStartExpectation() { observer_.ExpectStart(); }