Remove RenderFrameHost pointer from ChooserController.

chrome/browser/ui/views/extensions/chooser_dialog_view_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 "chrome/browser/ui/views/extensions/chooser_dialog_view.h"
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 12 matching lines @@
 #include "ui/views/window/dialog_client_view.h"
 
 class ChooserDialogViewTest : public views::ViewsTestBase {
  public:
   ChooserDialogViewTest() {}
   ~ChooserDialogViewTest() override {}
 
   // views::ViewsTestBase:
   void SetUp() override {
     views::ViewsTestBase::SetUp();
-    std::unique_ptr<MockChooserController> mock_chooser_controller(
-        new MockChooserController(nullptr));
+    auto mock_chooser_controller = base::MakeUnique<MockChooserController>();
     mock_chooser_controller_ = mock_chooser_controller.get();
     std::unique_ptr<ChooserDialogView> chooser_dialog_view(
         new ChooserDialogView(std::move(mock_chooser_controller)));
     chooser_dialog_view_ = chooser_dialog_view.get();
     table_view_ = chooser_dialog_view_->device_chooser_content_view_for_test()
                       ->table_view_;
     ASSERT_TRUE(table_view_);
 
     views::Widget::InitParams params =
         CreateParams(views::Widget::InitParams::TYPE_WINDOW);
@@ skipping 339 matching lines @@
   EXPECT_TRUE(cancel_button_->enabled());
   table_view_->Select(0);
   EXPECT_TRUE(ok_button_->enabled());
   EXPECT_TRUE(cancel_button_->enabled());
 
   mock_chooser_controller_->OnDiscoveryStateChanged(
       content::BluetoothChooser::DiscoveryState::IDLE);
   EXPECT_TRUE(ok_button_->enabled());
   EXPECT_TRUE(cancel_button_->enabled());
 }