Replace base::Tuple in //chrome with std::tuple

chrome/browser/apps/app_shim/app_shim_host_mac_unittest.cc

 // Copyright 2013 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 "chrome/browser/apps/app_shim/app_shim_host_mac.h"
 
+#include <tuple>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
 #include "chrome/common/mac/app_shim_messages.h"
 #include "ipc/ipc_message.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
@@ skipping 50 matching lines @@
                                      launch_type,
                                      std::vector<base::FilePath>())));
   }
 
   apps::AppShimLaunchResult GetLaunchResult() {
     EXPECT_EQ(1u, host()->sent_messages().size());
     IPC::Message* message = host()->sent_messages()[0];
     EXPECT_EQ(AppShimMsg_LaunchApp_Done::ID, message->type());
     AppShimMsg_LaunchApp_Done::Param param;
     AppShimMsg_LaunchApp_Done::Read(message, &param);
-    return base::get<0>(param);
+    return std::get<0>(param);
   }
 
   void SimulateDisconnect() {
     static_cast<IPC::Listener*>(host_.release())->OnChannelError();
   }
 
  protected:
   void OnShimLaunch(Host* host,
                     apps::AppShimLaunchType launch_type,
                     const std::vector<base::FilePath>& file) override {
@@ skipping 78 matching lines @@
   apps::AppShimHandler::RemoveHandler(kTestAppId);
 }
 
 TEST_F(AppShimHostTest, TestFailLaunch) {
   apps::AppShimHandler::RegisterHandler(kTestAppId, this);
   launch_result_ = apps::APP_SHIM_LAUNCH_APP_NOT_FOUND;
   LaunchApp(apps::APP_SHIM_LAUNCH_NORMAL);
   EXPECT_EQ(apps::APP_SHIM_LAUNCH_APP_NOT_FOUND, GetLaunchResult());
   apps::AppShimHandler::RemoveHandler(kTestAppId);
 }