Use OnceCallback on Mojo interfaces in //device/gamepad

device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc

Index: device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc
diff --git a/device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc b/device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc
index f1c5c27cfd46c2c896ec871715eac33e69c19ade..5a731fe88b005f08e5566a26eefce83284ff9b42 100644
--- a/device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc
+++ b/device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <utility>
+
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "device/gamepad/public/cpp/gamepad.h"
@@ -175,9 +177,8 @@ class GamepadStructTraitsTest : public testing::Test,
  protected:
   GamepadStructTraitsTest() : binding_(this) {}
 
-  void PassGamepad(const Gamepad& send,
-                   const PassGamepadCallback& callback) override {
-    callback.Run(send);
+  void PassGamepad(const Gamepad& send, PassGamepadCallback callback) override {
+    std::move(callback).Run(send);
   }
 
   mojom::GamepadStructTraitsTestPtr GetGamepadStructTraitsTestProxy() {