Remove RenderFrameHost pointer from ChooserController.

chrome/browser/ui/views/device_chooser_content_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/device_chooser_content_view.h"
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 27 matching lines @@
 
 }  // namespace
 
 class DeviceChooserContentViewTest : public views::ViewsTestBase {
  public:
   DeviceChooserContentViewTest() {}
 
   // 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();
     mock_table_view_observer_ = base::MakeUnique<MockTableViewObserver>();
     device_chooser_content_view_ = base::MakeUnique<DeviceChooserContentView>(
         mock_table_view_observer_.get(), std::move(mock_chooser_controller));
     table_view_ = device_chooser_content_view_->table_view_;
     ASSERT_TRUE(table_view_);
     table_model_ = table_view_->model();
     ASSERT_TRUE(table_model_);
     throbber_ = device_chooser_content_view_->throbber_;
     ASSERT_TRUE(throbber_);
@@ skipping 574 matching lines @@
   EXPECT_CALL(*mock_chooser_controller_, RefreshOptions()).Times(1);
   device_chooser_content_view_->StyledLabelLinkClicked(
       footnote_link_, device_chooser_content_view_->re_scan_text_range_, 0);
 }
 
 TEST_F(DeviceChooserContentViewTest, ClickGetHelpLink) {
   EXPECT_CALL(*mock_chooser_controller_, OpenHelpCenterUrl()).Times(1);
   device_chooser_content_view_->StyledLabelLinkClicked(
       footnote_link_, device_chooser_content_view_->help_text_range_, 0);
 }