Use OnceCallback on Mojo interfaces in //device/gamepad

device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // 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"
 #include "device/gamepad/public/interfaces/gamepad_struct_traits_test.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace device {
 
@@ skipping 153 matching lines @@
   closure.Run();
 }
 
 }  // namespace
 
 class GamepadStructTraitsTest : public testing::Test,
                                 public mojom::GamepadStructTraitsTest {
  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() {
     return binding_.CreateInterfacePtrAndBind();
   }
 
  private:
   base::MessageLoop message_loop_;
   mojo::Binding<mojom::GamepadStructTraitsTest> binding_;
 
@@ skipping 30 matching lines @@
 TEST_F(GamepadStructTraitsTest, GamepadPose_Null) {
   Gamepad send = GetWebGamepadInstance(GamepadPose_Null);
   base::RunLoop loop;
   mojom::GamepadStructTraitsTestPtr proxy = GetGamepadStructTraitsTestProxy();
   proxy->PassGamepad(send,
                      base::Bind(&ExpectWebGamepad, send, loop.QuitClosure()));
   loop.Run();
 }
 
 }  // namespace device