Add "Relaunch Chrome" dialog to Mac Views.

chrome/browser/ui/update_chrome_dialog_browsertest.mm

+// Copyright 2017 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 "base/command_line.h"
+#include "chrome/browser/ui/browser_dialogs.h"
+#include "chrome/browser/ui/cocoa/browser_window_cocoa.h"
+#include "chrome/browser/ui/test/test_browser_dialog.h"
+#include "ui/base/ui_base_switches.h"
+
+class UpdateRecommendedDialogTest : public DialogBrowserTest {
+ public:
+  UpdateRecommendedDialogTest() {}
+
+  // TestDialogInterface:
+  void ShowDialog(const std::string& name) override {
+    InProcessBrowserTest::browser()->window()->ShowUpdateChromeDialog();
+  }
+};

[tapted, 2017/01/24 00:28:11]

nit: private:
  DISALLOW_..

[Greg K, 2017/01/24 00:46:49]

Done.

+
+// Runs with --secondary-ui-md.
+class UpdateRecommendedDialogTestMd : public UpdateRecommendedDialogTest {
+ public:
+  UpdateRecommendedDialogTestMd() {}
+
+  // content::BrowserTestBase:
+  void SetUpCommandLine(base::CommandLine* command_line) override {

[tapted, 2017/01/24 00:28:11]

I think we can just collapse this into the test above (the other CL needed to
split the test harness to support some existing tests)

[Greg K, 2017/01/24 00:46:49]

Done.

+    command_line->AppendSwitch(switches::kExtendMdToSecondaryUi);
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(UpdateRecommendedDialogTestMd);
+};
+
+// Test that calls ShowDialog("default"). Interactive when run via
+// browser_tests --gtest_filter=BrowserDialogTest.Invoke --interactive
+// --dialog=UpdateRecommendedDialogTestMd.InvokeDialog_default
+IN_PROC_BROWSER_TEST_F(UpdateRecommendedDialogTestMd, InvokeDialog_default) {
+  RunDialog();
+}