[Media Router] Don't show "Manage Cast Devices" in incognito mode.

chrome/browser/ui/toolbar/media_router_contextual_menu_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 <memory>
 
 #include "base/macros.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/extensions/browser_action_test_util.h"
 #include "chrome/browser/extensions/extension_action_test_util.h"
@@ skipping 105 matching lines @@
 
   // Run the same checks as before. All existing menu items should be now
   // enabled and visible.
   EXPECT_EQ(model_->GetItemCount(), expected_number_items);
   for (int i = 0; i < expected_number_items; i++) {
     EXPECT_TRUE(model_->IsEnabledAt(i));
     EXPECT_TRUE(model_->IsVisibleAt(i));
   }
 }
 
+// Note that "Manage devices" is always disabled on Linux.
+TEST_F(MediaRouterContextualMenuUnitTest, ManageDevicesDisabledInIncognito) {
+  // Create the MediaRouterAction under an incognito profile.
+  profile()->ForceIncognito(true);
+  action_ = base::MakeUnique<MediaRouterAction>(
+      browser(), browser_action_test_util_->GetToolbarActionsBar());
+  model_ = static_cast<ui::SimpleMenuModel*>(action_->GetContextMenu());
+  EXPECT_EQ(-1, model_->GetIndexOfCommandId(IDC_MEDIA_ROUTER_MANAGE_DEVICES));
+}
+
 // Tests whether the cloud services item is correctly toggled. This menu item
 // is only availble on official Chrome builds.
 TEST_F(MediaRouterContextualMenuUnitTest, ToggleCloudServicesItem) {
   // The Media Router Action has a getter for the model, but not the delegate.
   // Create the MediaRouterContextualMenu ui::SimpleMenuModel::Delegate here.
   MediaRouterContextualMenu menu(browser(), kInToolbar, kShownByPolicy);
 
   // Set up an authenticated account such that the cloud services menu item is
   // surfaced. Whether or not it is surfaced is tested in the "Basic" test.
   signin_manager_->SetAuthenticatedAccountInfo("foo@bar.com", "password");
@@ skipping 58 matching lines @@
 TEST_F(MediaRouterContextualMenuUnitTest, ShowActionInToolbarItem) {
   MediaRouterContextualMenu menu(browser(), kInOverflowMenu, kShownByUser);
 
   // When the action icon is in the overflow menu, this menu item should say
   // "Show in toolbar".
   const base::string16& menu_item_label = menu.menu_model()->GetLabelAt(
       menu.menu_model()->GetIndexOfCommandId(IDC_MEDIA_ROUTER_SHOW_IN_TOOLBAR));
   EXPECT_EQ(menu_item_label,
             l10n_util::GetStringUTF16(IDS_EXTENSIONS_SHOW_BUTTON_IN_TOOLBAR));
 }